Forensic and rescue members work at the helicopter crash site in Coronango, Puebla, Mexico, Dec. 24, 2018. The governor of Mexico's central state of Puebla, Martha Erika Alonso, and her husband Rafael Moreno Valle, ex-governor of the state, were killed in a helicopter crash on Monday, the head of the National Action Party Marko Cortes confirmed. (Xinhua/Str)