The death toll from suspected gangsters’ attacks on Guatemalan police rose to 10 on Monday, ABC News reports.

The violence started Saturday when inmates seized control of three prisons in apparently coordinated riots, taking 43 guards hostage. The gangs were demanding privileges for their members and leaders, according to authorities. Shortly after police liberated one prison Sunday morning, suspected gang members attacked police across the capital.

Officials said late Monday a tenth police officer died following the attacks.

Guatemala declares state of emergency