Lester Mendoza, who specializes in pulmonary critical care, was present when the perpetrator was informed about his loved one's death.

YORK COUNTY, Pa. (WHTM)– An active shooter situation locked down UPMC Memorial in York County, according to officials from West Manchester Township. Details are limited at this time, but officials from West Manchester Township have confirmed that it is an active shooter situation. Residents should avoid the area around UPMC Memorial.