The police internal affairs department says it is to launch proceedings against 204 officers for a range of crimes.
The spokesman for the Police Inspection Bureau, Jozef Pacach, said October 12 that crimes committed before September, including insurance frauds involving policemen, would be investigated.
In one recent case an insurance company paid out just under $20,000 to cover a written-off car on the basis of a falsely-issued accident report by a local police officer.
Pacach said police were involved in giving out information to smugglers on police patrol movements.
Senior police officers are also believed to be implicated in taking bribes for letting people off motoring offences.