May 31, 2012 Source : http://abclocal.go.com

HARRISBURG –  Gov. Tom Corbett has signed execution warrants for three men on death row.

• Darien Houser was convicted of the 2004 killing of a Philadelphia warrant officer attempting to serve a warrant on Houser for failing to appear at his rape trial.
• John Koehler Jr. is on death row for persuading a teenager to kill Koehler’s girlfriend and her 9-year-old son in Bradford County in 1995.
• Willie Clayton was found guilty in 1986 of killing two Philadelphia men during separate robberies, two months apart.

Pennsylvania has executed only three people – all of whom chose to end their appeals – since the U.S. Supreme Court restored the death penalty in 1976. The last was in 1999.