Amy Bishop Anderson and her husband, Jim, were questioned after a package containing two pipe bombs was sent to the Newton, Massachusetts, home of Dr. Paul Rosenberg, a Harvard professor and a doctor at Family's Hospital Boston, the Sphere said, citing a law enforcement official. At the time, Anderson was working as a postdoctoral fellow in the hospital's creature biochemistry lab.

Anderson is charged with capital murder in the Friday shooting deaths, making her eligible for the fatality penalty in Alabama. Authorities said she was attending a faculty meeting in a university construction when she brandished a gun and shot six colleagues, killing three.

The mother of four was arrested as she was leaving the construction, Huntsville Police Chief Henry Reyes said Saturday. A 9 mm handgun was recovered from the second floor of the construction after the shootings Friday.

On Saturday, it was revealed that in 1986, Anderson, then 19, shot her brother to fatality in Braintree, Massachusetts. Authorities single-minded after an investigation that the shooting was accidental.

But Braintree Police Chief Paul Frazier said Saturday, "It is a far different tale, I believe, than what was reported back then. I cannot tell you what the thought process was behind our releasing her at the time."

Anderson's husband, Jim, told CNN on Monday that federal investigators had gathered a dozen subjects in the attempted bombing, but "there were never any suspects. Never anyone charged, never anyone arrested."

"Then five years later, we got a letter from the ATF saying, 'You are in the clear,' " he said, referring to the Bureau of Alcohol, Tobacco, Firearms and Explosives.

Sylvia Fluckiger, a lab technician who worked with Anderson at the time, told The Boston Sphere on Sunday that Anderson had a dispute with Rosenberg shortly before the bomb incident.

Fluckiger told CNN affiliate WCVB-TV in Boston, "Police interviewed her, and she told me about it. I really wondered if she may have had, you know, some extra knowledge, although I'm not accusing her of anything."

Rosenberg was opening a package delivered to his home while he was away on vacation, but he saw wires and a cylinder inside and called police, the Sphere reported.

"She was the suspect early on," the law enforcement official, who the Sphere said had knowledge of the case, told the newspaper of Anderson. She allegedly was concerned that she was going to receive a negative evaluation from Rosenberg, the official said.

Jim Anderson told The New York Times the December 1986 fatality of his wife's brother, Seth, was accidental. He declined to comment when CNN questioned him about the shooting Monday.

Frazier, but, said Saturday that an official involved in the case and still working for Braintree police told him that the teen had shot her brother during an argument. She fired a shot in her bedroom without hitting anyone, then argued with her brother and shot him, he said.

She fled the home after the shooting and was arrested after pointing a weapon at a vehicle near the house in an unsuccessful attempt to get the driver to stop. During the booking process, then-Chief John Polio called and told the officers to release her, Frazier said. He extra her mother was then a member of the Braintree Personnel Enter.

Reached by CNN, Polio, now 87 and retired, denied calling in that order, saying detectives told him the shooting appeared accidental and it was single-minded Anderson should be released to her mother. He said any link linking Anderson's release and her mother's position on the enter was "laughable."

Anderson's mother, Judith, did not pledge her door Monday. Reached by telephone, she told CNN, "We're very distraught," and declined further comment.

A December 8, 1986, article in The Boston Sphere said Anderson questioned her mother how to unload a round from a 12-gauge shotgun and accidentally shot her brother while she was usage the weapon. The article cited Polio as the source.

The disorder police report on the incident, released Sunday by the office of Rep. Bill Delahunt, D-Massachusetts, is similar to the Sphere's account. Delahunt was district attorney at the time; staffers said he was in the Middle East on Sunday and unable to comment on the case.

The 1986 report said Braintree police told disorder police investigators "indications were that Amy Bishop had been attempting to manipulate the shotgun and had subsequently brought the gun downstairs in an attempt to gain help from her mother in disarming the weapon" when it went off, shooting her brother in the chest.

In a December 17, 1986, interview, Anderson told authorities she "thought it would be a excellent thought if she learned how to load the shotgun in the house," according to the disorder police report. The young woman told police she was concerned for her own safety after the family home was kaput into, although she previously had been frightened of the gun.

She said she got the gun and loaded shells into it, but was unable to get them out. Anderson said that while she was attempting to unload the weapon on her bed, it went off. She then took it downstairs to question for help in unloading it, where the shooting occurred.

The police report said both Anderson and her mother said the shooting was accidental. Her mother told police she did not hear the earlier shot in her daughter's bedroom and "believed the house was relatively well soundproofed and that such a discharge would not necessarily be heard on another floor of the house."

Frazier said police records of the incident are missing. But Polio said, "There was no cover-up. Absolutely no cover-up and no missing records. The records were all there when I left. Where they went in the last 22 years and two police chiefs subsequent, I don't know."

Braintree Mayor Joseph Sullivan said Sunday that a review will commence to locate all materials associated with the shooting.

Anderson, who is known to students as Dr. Bishop, had been working at the University of Alabama in Huntsville in view of the fact that 2003 and was up for tenure, according to spokesman Ray Garner. But, authorities wouldn't discuss possible motives or whether the issue of tenure may have played a role in the shooting.

Garner said the university gives teachers six years to get tenure. Those who do not get it are terminated, he said.

Jim Anderson told CNN on Monday that his wife had been denied tenure and had appealed that choice and won, but she was still fighting to be granted tenure. She was frustrated with "the process," he said.

He told CNN earlier his wife had an attorney but would not say who it was, and he described her as a excellent teacher. He said Monday his wife wrote three novels, "medical thrillers." The couple does not own a gun, he said.

He said he last saw his wife briefly on Friday morning before she left for class. He said she was "loving, got along with everybody."

The family, he said, is devastated, and in "shock, bewilderment, wondering why."

He told the Times the pipe bomb incident is "one thing from the past I hoped would not be dredged up."

The House Culture Committee voted unanimously Tuesday in favor of a bill that would expand the criminal background checks required of school employees to include volunteers.

HB81 would demand background checks for "volunteers who [are] given significant unsupervised access to a student in connection with the volunteer's assignment."

Legislators dismissed the concerns of Rob Layton, of the Utah Association of Criminal Defense Lawyers, who warned that vague language in the bill would make it hard for citizens to volunteer in schools.

"You are excluding a large range of people," he said, citing those who have been arrested, but not charged, and those who have been convicted of drug and alcohol-related misdemeanors, such as open container and marijuana possession laws. "It is just additional burdens on [volunteers]."

The bill's sponsor, Rep. Sheryl Allen, R-Bountiful, said extra stringent requirements are necessary to protect family. The bill comes after public safety officials last year unearthed nearly 7,000 arrests, criminal charges or convictions. But a single employee could account for a dozen or extra of those, said agency spokesman Jeff Nigbur.

The bill would also allow districts to demand employees, applicants and volunteers to pay the background check fees, rather than the district casing those expenditure.

Currently, teachers undergo a background check as part of receiving or renewing a teaching ticket.

Licensing fees charged to them cover the expenditure of background checks. Periodic checks are also required for non-teaching staff such as bus drivers.

A district may choose to demand non-certified employees, such as custodians, secretaries, and lunch clerks, to undergo a background check when they are hired, although the district must cover those expenditure. Becky Williams, the creature resources director for Davis School District, said shifting those fees would save her district approximately $300,000 over six years. Pre-use.com offers background check air force to thousands of organizations and is the largest supplier of volunteer background checks in the nation. Full descriptions can be found here:

http://www.mybackgroundcheck.com/Business/Volunteer