A former Windham man convicted of a triple murder in New Hampshire was sentenced to death by a Florida jury for killing another prison inmate with a padlock.

Michael Woodbury, 42, has been serving a life sentence without parole in Florida since 2009 for shooting to death three people during a botched robbery at an Army Barracks store in Conway, New Hampshire, in 2007.

Woodbury, who previously lived in Windham, pleaded guilty in May to first-degree premeditated murder for beating fellow inmate Antoneeze Haynes to death with a padlock on Sept. 22, 2017, at Okeechobee Correctional Institution. During a three-day trial, Woodbury claimed that Haynes tried to rape him, according to the Okeechobee News.

A 12-member jury in Okeechobee County handed down its unanimous decision Tuesday after 37 minutes of deliberation. The judge presiding over the case can either follow the jury’s decision or give Woodbury a life sentence. A decision will be made following a September hearing, assistant state attorney Ashley Albright told the Conway Daily Sun.

Woodbuy was 31 when he shot and killed three people at an Army Barracks store in Conway, New Hampshire, in 2007. Killed were store manager James Walker, 34; and customers William Jones, 25, of Walpole, Massachusetts; and Gary Jones 23, of Plymouth, Massachusetts. Woodbury, who police said was in the middle of a multistate crime spree at the time of the murder, was captured in Fryeburg a day later.