United Kingdom, Jan. 13 -- Police have been unable to locate Timothy Busfield after a warrant was issued for his arrest.

The former West Wing actor - who is married to Melissa Gilbert - is under investigation over allegations of child sexual abuse, and now the US Marshals Service has stepped in to help find the 68-year-old star, the Alburquerque Police Department (APD) have confirmed to People magazine.

Asked by the outlet if Busfield has been located, detained or arrested at this point, the APD spokesperson replied: "Not that I am aware."

The actor-and-director is wanted on two counts of criminal sexual contact of a minor and one count of child abuse after it was alleged he engaged in unlawful sexual conduct with two 11-year-old sibli...