Mexican authorities say eight police officers have been killed in less than 24 hours in a state near the capital.
Mexico state attorney general's office spokesman Octavio Campos says the police chief and a commander in the town of Teoloyucan were found shot to death on Friday inside a patrol car.
Campos says six state officers were gunned down in three separate attacks late Thursday.
Seven other people were also killed in the state during the same period.
Mexico state is one of several that have suffered a wave of homicides. Officials blame the violence on warring drug gangs.