Philadelphia June 24, 2019 6:24 pm Refinery Explosion Investigation Begins in Full as Protests Continue The Chemical Safety Board and other local, state and federal investigators continue to search for the cause of a fire and explosion at the Philadelphia Energy Solutions refinery. US & World Videos 1:47 New nationwide Xfinity ad features 3 Vietnam War vets as Military Appreciation Month begins 1:08 Philly police believe teenage girl stabbed grandmother to death inside rowhome 2:10 ‘You're speechless and can't believe what you saw.' Mom sees video of attack on her autistic son on SEPTA train 0:39 1 dead, 3 injured in Eastwick after two separate shootings, police say 0:22 Rescue crews call off search for missing kayaker in Schuylkill River