Video of Missing Ayotzinapa Students Before Their Disappearance

Officials still don’t know the whereabouts 43 other college students from the Ayotzinapa teachers college in southern Mexico who went missing on Sept. 26 — the day their group was allegedly abducted by police and handed over to a local drug gang. Authorities believe a mass grave found Monday near a landfill in the city of Cocula may contain their remains, but forensic experts have yet to identify any bodies.