A man dressed as Santa who had been having marital problems opened fire at a Christmas party, leaving more than three people dead in a home that then caught fire, authorities said. Hours later, police found the body of the suspect, Bruce Jeffrey Pardo, 45, at the home of his brother early Thursday in the Sylmar area of Los Angeles. Pardo had died from a single gunshot wound to the head, Los Angeles police Sgt. Martin Guerrero said. "He was going through some type of marital problems, and we believe that this residence is a relative's residence," Lt. Pat Buchanan said of the house that burned.