| GEO World|
| Four die in Argentina prison riot|
| Updated at: 0630 PST, Tuesday, December 15, 2009|
BUENOS AIRES: A riot Monday at a prison north of the Argentine capital Buenos Aires left four detainees dead and three police officers injured, the authorities said.
When guards discovered inmates working on a tunnel, prisoners started burning mattresses, sheets and clothing, setting off a riot and deadly clashes, said police commissioner of Buenos Aires province General Salvador Baratta.
"We have four of the inmates deceased and three police injured, two of them seriously," Baratta said, adding that an investigation had been launched to find out how the prisoners died.