from pottstown will stand trial on vehicular homicide charges. 18-year-old justin jackson waived his prelinary hearing today. police say he had marijuana in his system and he was texting when his vehicle hit and killed merinda thompson. it happened on north lewis road in limerick, montgomery county on march fourth. thompson was jogging when she was struck. police said jackson lied to them about what happened after the crash. >>> rob vaughn: charges have been filed against a