A TEXAS cop killer was put to death last night after the Supreme Court shot down his last minute appeal. Frank Martinez Garcia, 38, was executed in Huntsville at 7:02 p.m. CST. On March 29, 2001 Garcia shot to death San Antonio Police officer Hector Garza during a domestic incident. He then shot and killed his wife Jessica. His 5-year-old daughter witnessed the massacre. MORE ON COP KILLER