Federal police officers guard a door to La Mesa state penitentiary during a prison riot in Tijuana, Mexico, Sunday, Sept. 14, 2008. Prisoners were angered by the alleged deaths of inmates at the hands of guards, and at least four prisoners were injured.[Guillermo Arias/AP]

Towers of La Mesa State Prison burn as inmates riot in Tijuana, Mexico, Sunday, Sept. 14, 2008. Prisoners were angered by the alleged deaths of inmates at the hands of guards, and at least four prisoners were injured.[Guillermo Arias/AP]

At least 40 people were injured. Officials say the riot started late Sunday as guards searched cells for drugs and arms. Inmates hung several messages from windows during the riot claiming guards had killed at least two prisoners, beating one man to death on Saturday and killing the other last week. The prisoners also want longer visiting hours and to be able to see people who aren't direct family members.

Early on Monday, state and federal police aided by soldiers retook control of the penitentiary.

(CCTV September 17, 2008)