Steve Nunn, the Kentucky Republican former gubernatorial candidate and state lawmaker, has been charged in the murder of his former fiancée Amanda Ross.

As we told you Friday, Nunn was found with a gun and slit wrists in the cemetery where his parents are buried, hours after Ross -- with whom he had had a tumultuous and violent relationship -- was found shot to death in the parking lot of her Lexington apartment.

Nunn had spent the weekend in the hospital, before being taken yesterday morning to the Hart County jail. He had earlier been charged with violating the terms of a protective order obtained by Ross by carrying the gun, and with endangering a police officer by firing it after cops showed up at the cemetery.

The murder charges are contained in an arrest warrant obtained by Lexington police yesterday evening.

Nunn is the son of former Kentucky governor Louie Nunn. In 2003, Steve Nunn lost to Ernie Fletcher in the GOP primary for governor in 2003. Until February, he had been serving as an official in the state's health and human-services department, but stepped down after having an order of protection placed on him, in connection to a February incident in which Ross alleged her had struck her.

Late Update: Details from the arrest warrant are here, including how Nunn told police on Friday, hours after Ross was shot, that he "was at the end of his rope and wanted revenge." And the warrant itself is here.