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Police hold back the relatives of inmates outside Apodaca correctional state facility as they try to get past the gates in Apodaca on the outskirts of Monterrey, Mexico, Sunday Feb. 19, 2012. A fight among inmates at the prison led to a riot that killed dozens on Sunday, according to a security official. (AP Photo/Hand Maximo Musielik)

Scores killed in Mexico prison riot

An inmate riot that may have been staged to cover a breakout killed 44 prisoners Sunday, and the jail's director and all guards on duty at the time have been detained, a security official said.