The Massachusetts state trooper arrested for allegedly abusing his wife has been suspended indefinitely without pay, State Police said in a statement. Donald S. Pillsbury, 42, was suspended following a duty status hearing today at State Police headquarters in Framingham. Pillsbury had pleaded not guilty to assault and battery Thursday after he was arrested in his Brimfield home. “The State Police internal affairs section will continue to monitor the criminal proceedings against Pillsbury,” State Police spokesman David Procopio said in a statement. “We have opened our own internal affairs investigation of Pillsbury as well.”