HYDERABAD: Cyberabad police detained 40 people including chain snatchers during a cordon and search operation held at Chintalmet in Rajendranagar police limits on Sunday morning.About 100 policemen led by Shamshabad DCP A R Srinivas searched 500 houses in Chintalmet. Police arrested 40 persons including chain snatchers and suspects in various offences. Police also seized 50 bikes, 10 auto rickshaws that had no valid documents.