SANTA ANA -- A man suspected of molesting a 4-year old boy in Orange County has been arrested in Las Vegas.

The U.S. Marshal's Fugitive Task Force arrested Ronald William Crocker at his home in Las Vegas Tuesday, according to Santa Ana Cpl. Anthony Bertagna.

The 55-year old is charged with oral copulation or sexual penetration with a child 10 years or younger, according to the arrest warrant.

Crocker is accused of molesting the boy, who was a neighbor, Feb. 8, Bertagna said.

While Crocker's grandchildren were playing with the boy, Crocker allegedly got the boy alone and sexually assaulted him, Bertagna said.

Santa Ana detectives linked Crocker to the crime through DNA evidence, Bertagna said, adding that Crocker was being held in the Clark County jail awaiting extradition.