Trooper Suspended Without Pay As Alleged Posts Probed

The state trooper who fired a rifle during last weekend's I-93 melee has been suspended indefinitely without pay as officials determine whether he, in fact, wrote a string of offensive online posts in recent years.Trooper Matthew Sheehan is the focus of an Internal Affairs probe, where officials say they are determining whether Sheehan authored posts under the screen name Big Irish, targeting minorities and discussing use of force on the job.