At least 13 people have been killed after a fight broke out in a prison in northern Mexico.
A protest by inmates overnight had spiralled out of control, one prisoner was killed and a number of guards were taken hostage.
Police were sent in to calm the disturbance but the fight soon escalated to involve around 250 inmates.
Anxious family members gathered outside the prison during the day waiting for news of their loved ones.
Rival gangs that are involved in drug trafficking, human smuggling and extortion have fueled bloody battles in Mexico’s overcrowded prisons.
At least 28 inmates were killed in July in a battle in a prison in the Pacific resort of Acapulco.