JACKSON, Ga. — A Georgia prisoner who tried to kill himself last week by slashing his arms and throat with a razor blade was executed Monday night amid heightened security for the 1998 murders of a trucking company owner and his two children.

Brandon Joseph Rhode, 31, was put to death by injection at the state prison in Jackson. He was pronounced dead at 10:16 p.m. by authorities. Rhode declined to speak any last words, and gave an emphatic “No” when he was asked whether he wanted a final prayer.