Police are investigating what caused a bus carrying a college women's lacrosse team to veer off the Pennsylvania Turnpike and crash into a tree, killing a pregnant coach, her unborn child and the driver. Seton Hill University team players and coaches were among 23 people aboard when the bus crashed Saturday morning. The team was headed to an afternoon game at Millersville University, about 50 miles from the crash site in central Pennsylvania. Head coach Kristina Quigley, 30, of Greensburg died of her injuries at a hospital, Cumberland County authorities said. Quigley was about six months pregnant and her unborn son didn't survive. The bus driver, Anthony Guaetta, 61, of Johnstown, died at the scene. Two victims flown to Penn State Hershey Medical Center remained there Sunday, but no information was released about their identities or conditions. A woman was in satisfactory condition at Holy Spirit Hospital in Carlisle in Camp Hill and was expected to be discharged later Sun