BOSTON (AP) - A Massachusetts grand jury has been convened to hear evidence in the 1986 shooting death of the brother of a former university professor accused in Alabama of killing three colleagues.
Retired Braintree police chief John Polio told The Associated Press on Friday he's been subpoenaed to testify before the grand jury in Norfolk Superior Court next week.
A spokesman for the Norfolk district attorney's office won't comment. Amy Bishop's shooting of her teenage brother initially was ruled an accident.
Authorities began reinvestigating after Bishop was charged in the University of Alabama-Huntsville shootings in February. Bishop's family insists she shot her brother accidentally while trying to unload her father's gun.
A Quincy District Court judge recently conducted a closed-door inquest into the 1986 case and filed a sealed report.