A Georgia man convicted of killing a close friend of his mother is to be executed Tuesday.

Brian Keith Terrell is scheduled to die at 7 p.m. He was convicted in the June 1992 killing of 70-year-old John Watson.

Terrell was on parole in June 1992 when he stole and forged checks belonging to Watson. Prosecutors say Terrell was supposed to return the money but instead shot Watson multiple times and severely beat him.

Terrell's lawyers say their client is innocent and that prosecutors used false and misleading testimony to get the conviction. State lawyers say courts have already heard and rejected the defense arguments.

The parole board on Monday denied clemency after a hearing for Terrell. Terrell also has court challenges pending.