LANCASTER COUNTY, Pa. ( WHTM) — Police in Pennsylvania say that a woman who fatally struck a teenage boy in a hit-and-run in Lancaster County last year was on her phone during the crash.

Jean Paul Al Arab and his 6-month-old led police on a brief foot chase during a University at Buffalo ceremony. The school said the grad violated rules about who can participate in the commencement.

The graduate, Jean Paul Al Arab, went viral earlier this week after video captured him running across the stage at Alumni Arena with his son in his arms, being chased by security and campus police.