Pittsburgh Steelers quarterback Dwayne Haskins was killed after being hit by a dump truck in South Florida, and officials said that it is an “open traffic homicide investigation.” Haskins, who previously started for the Washington NFL team, was pronounced dead at the scene of the accident, near Fort Lauderdale, on Saturday, according to the Florida Highway Patrol. “This is an open traffic homicide investigation,” Florida Highway Patrol spokeswoman Lt. Indiana Miranda told Fox News on Sunday. “No further information will be released until the investigation has been closed.” The former Ohio State University standout was reportedly in Florida training with fellow Steelers quarterback Mitch Trubisky. Haskins recently renewed his contract with Pittsburgh last month after serving as a backup to former Steelers quarterback Ben Roethlisberger last season. Haskins was hit and killed by a dump truck while “walking on a limited access (highway) for unknown reasons” near the Fort Lauderdale-Hollywood International Airport in …