"Railroad Killer's" Attorneys Hope Supreme Court Will Stop Execution

Lawyers for so-called "Railroad Killer" Angel Maturino Resendiz have asked the U.S. Supreme Court to block today's scheduled execution.

Resendiz faces lethal injection in Huntsville over the 1998 fatal stabbing and bludgeoning of a Houston-area physician. Authorities have linked Resendiz -- who's a native of Mexico -- to at least 15 U.S. slayings, going back to a 1986 killing in San Antonio.

Known as the "Railroad Killer," authorities say Resendiz hopped on freight trains and committed random acts of carnage across the country. Most of the attacks happened near railroad tracks.

Defense attorney Jack Zimmermann says Resendiz does not make a factual connection between his crime and his punishment. The Houston-based Consul General of Mexico has filed an appeal questioning the inmate's mental competency and challenging the lethal injection process.