BOSTON (AP) — A hearing on a motion to dismiss public corruption charges against former Massachusetts Treasurer Timothy Cahill has been postponed.

Lawyers for Cahill and two former aides were scheduled to argue the motion in Suffolk Superior Court Tuesday. The hearing was postponed because of a scheduling conflict for one of the defense attorneys. No new date was immediately set.

Cahill is accused of airing taxpayer-funded ads for the state lottery as a means of promoting his unsuccessful independent campaign for governor in 2010. The treasurer oversees the lottery.

He’s charged with violating state ethics laws and procurement fraud.

Cahill, who was indicted in April, has said he did nothing wrong and pleaded not guilty.

Copyright 2012 The Associated Press.