A prayer service was held Thursday night for 15-year-old Samantha lee Kalkbrenner, a Serra Catholic High School student who was killed Wednesday morning in a crash in Dravosburg. Authorities say Kalkbrenner, was killed and three other students were taken to local hospitals in stable condition while two men were taken in critical condition. Kalkbrenner was pronounced dead at the scene. The initial investigation by county police shows the van was attempting to make a left-hand turn onto Richland when it was struck by a Jetta traveling north on Richland. Serra Catholic High School will be closed through Friday. School activities are also cancelled. (Photo: WPXI)