PokerTek (Nasdaq: PTEK), a provider of automated poker tables and related services, has a new chief executive officer.

Mark Roberson, who joined PokerTek as chief financial officer in October 2007, is taking over as CEO. He replaces Chris Halligan, who resigned May 29. Halligan was named CEO in September of 2007. He resigned for personal reasons, according to the company.

Roberson is taking the CEO on an acting basis, PokerTek said in a statement.