ALBUQUERQUE, N.M. — A campaign consultant for a GOP congressional candidate in a closely watched New Mexico race has been fired by his Nevada firm amid a domestic violence investigation.

Benjamin Sparks was fired Thursday following a police report about a domestic dispute.

Las Vegas-based RedRock Strategies president Ryan Erwin confirmed the dismissal. Sparks had been helping with the campaign of Yvette Herrell.

Las Vegas Police Officer Larry Hadfield said authorities arrived at the home of Sparks and his girlfriend early Thursday in response to a domestic violence call. Hadfield says no arrests were made but the case remains under investigation.

Sparks’ voicemail was full and he didn’t immediately respond to text messages.

Herrell didn’t immediately return a phone message. The state representative faces three other GOP opponents in the open race for southern New Mexico’s congressional seat.