Hundreds of arrests have been made by Derbyshire Police in the first month of a crackdown on anti-social behaviour.
Operation Relentless began on 1 May with key offences such as violence, criminal damage, burglary and vehicle crime being targeted.
Officers said total arrests during May 2007 numbered 2,797 - an increase of more than 14% compared to the same month last year.
People have been arrested for offences including criminal damage and assault.
Assistant Chief Constable Peter Goodman, said: "Already the effects of the campaign are starting to be felt across the county and crime levels are starting to fall.
"But I still believe that to appreciate the full effects of Operation Relentless we need to wait until the end of the initiative.
"We are already seeing large decreases in criminal damage which highlight the positive effect of increasing patrols."
The two-month campaign will run until the end of June.