WOODBURY - The Nassau County Police Department is investigating some of its officers who took part in an event to endorse Hempstead Town Supervisor Kate Murray in her run for Nassau district attorney.

About a dozen Nassau officers appeared in uniform with campaign signs in hand at the political-endorsement event on Monday. The event was hosted by the Nassau PBA and detectives union, which both announced their support for Murray as district attorney.

"The department is reviewing the actions of the officers to determine if any violations of the Nassau County Police Department rules and regulations occurred," a Nassau police spokesperson tells News 12.

According to PBA President James Carver, the officers did not violate state election law by appearing in uniform.

Political consultant Mike Dawidziak agrees that no wrongdoing was done on the officers behalf.

"The police are not bound by election law -- elected officials are," he says. "The police don't need to check with the state elections board as to what's allowable in, say, campaign literature."

Nassau police have not provided details about the rules dictating officers' participation in political events.

Kate Murray and her Democratic opponent, Madeline Singas, declined to comment.