Prosecutors intend to seek the death penalty for a 22-year-old man being held in the sexual assault and killing of a mother and daughter and the near-fatal hammer attack on their husband and father in their Las Vegas home.

Prosecutor Robert Daskas said a Clark County district attorney's office panel approved the move Wednesday.

Bryan Devonte Clay Jr. faces murder, kidnapping and other charges in the attacks on Ignacia "Yadira" Martinez, 10-year-old Karla Martinez and Arturo Martinez. Clay also is accused of trying to rape a woman hours before the April 15 attacks.

Clay is being held pending arraignment June 13. His lawyers could not be immediately reached.

Authorities say he told detectives he drank alcohol, took Ecstasy and smoked PCP, and didn't remember the attacks.