Bundy had antisocial personality disorder. He went on trial from June 25 to July 31 for the murders he had committed. He was sentenced to death by the electric chair. In the time he was in prison and waiting to be executed, he helped the police investigate other murders and in 1988 he admitted to having killed eight more women than he was tried for. Bundy was executed by electric chair in Florida State Prison on January 24, 1989. He was 42 years old.