CIUDAD VICTORIA, Mexico (AP) - Nine inmates are dead and 11 injured following a fight between prisoners at a jail in the northern Mexico border city of Reynosa.
Authorities in Tamaulipas state say rival groups of inmates fought with shanks, sticks and rocks in two parts of the prison.
The fight occurred Thursday during family visiting hours. Guards fired shots to control the situation.
The state security Coordination Group said the fight appears to have involved a struggle for control within the prison between two groups.
While it did not identify the groups, Reynosa has seen pitched battles between factions of the Gulf Cartel.
Prisons in Tamaulipas state have been the scene of frequent riots, fights and escapes.
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