At least six people died in an overcrowded Guatemala prison on Sunday as prisoners, some armed with AK-47 assault rifles, rioted.
The prison, about 40 miles (65 km) south of Guatemala's capital city, houses 3,092 prisoners but it has capacity for 600.
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Special police forces and the army were sent to take control of the prison, a spokesman for Guatemala's prisons said.
Guatemala awarded Mexican construction company ICA, which has been struggling under a heavy debt burden, a multi-million dollar contract to expand the prison late last year, according to official contract data.