Texas has executed Lester Bower Jr., who was convicted of killing four men in 1983, after the Supreme Court denied him a final appeal.
Lester Bower Jr., 67, is the oldest man executed in Texas since the state resumed its use of capital punishment in 1982.
Prosecutors said Lester Bower shot dead four men in an aeroplane hangar in Sherman, a ranching town north of Dallas.
He had maintained his innocence throughout his incarceration.
Lester Bower’s last words were: “Much has been said about this case. Much has been written about this case. Not all if it has been the truth. But the time for discerning truth is over and it’s time to move on.”
He is the eighth man put to death by lethal injection in Texas in 2015.
Lester Bower was a chemical salesman with no criminal record at the time of the murders.
According to police, Lester Bower went to Sherman to purchase a plane but instead stole the plane and killed the men in the hanger.
Building contractor and B&B Ranch owner Bob Tate, Grayson County Sheriff’s Deputy Philip Good, interior designer Jerry Brown and former Sherman police officer Ronald Mayes were found dead on October 8, 1983.
Lester Bower initially lied to investigators about being at the hanger and police found parts of a plane owned by Jerry Brown at his home.
Last month, Lester Bower told the Associated Press: “I do have remorse.
“I’m remorseful for putting my family and my wife and my friends through this.”