KEY WEST, Fla. – A Monroe County Sheriff's Office deputy was arrested Friday on an outstanding warrant stemming from a domestic battery investigation in Key West.

Edgar Pineiro, 37, is accused of calling his ex-girlfriend by obscene names and spitting in her face during the May 5 incident, sheriff's spokeswoman Becky Herrin said.

Pineiro was hired by the Monroe County Sheriff's Office in 2003. He was assigned to security detail at the Key West courthouse.

Herrin said Pineiro has been suspended pending the outcome of the criminal investigation and an internal review.

Follow Local 10 News on Twitter @WPLGLocal10