Bolivia's top police commander says his agency has spied on journalists and politicians without his knowledge.

The national police commander, General Miguel Vasquez, accused a subordinate of carrying out what he described as the "dirty work."

The announcement Thursday came after the release of photographs sent to news outlets that appear to show attempts to spy on individuals, including two congressmen, an opposition governor and a television news reporter.

Vasquez blamed the head of the national police intelligence service, Jose Luis Centellas, for the alleged espionage operation.

General Vasquez vowed to weed out corruption in his force.

Some information for this report was provided by AP.