Store manager James Walker, 34, and customers William Jones, 25, of Walpole, Mass., and Gary Jones, 23, of Plymouth, Mass., were killed. The Joneses were not related.

Autopsy results released Tuesday showed that Walker died of multiple gunshot wounds to the head, William Jones died of multiple gunshot wounds to the head and chest and Gary Jones died of a single gunshot wound to the head.

Army Barracks, a small chain, is based in Salem, Mass. The stores sell camping equipment and gear such as knives, stun guns and paintball guns but no firearms, Vice President Marilyn Brabantes said. On Tuesday, flowers and a yellow ribbon had been placed by the door to the store, along with a pair of soldier figurines.

Kenny Jones, the brother of William Jones, said William and Gary Jones were friends returning from a camping trip in Maine.

"I couldn't be happier that they have someone in custody," Kenny Jones said. "I hope it's the right person, and I hope they can make the charges stick because I want to see somebody pay for this."

In court on Thursday, Woodbury waived extradition to New Hampshire, and authorities immediately transported him back to the state. He's scheduled to be arraigned Friday on three counts of first-degree murder.

As he left the court, Woodbury criticized Maine prison officials for releasing him earlier this year, saying he had warned them he would likely commit another crime.