Addressing a award function of the city police Bhattacharjee, said, "terrorists are coming and going through the city of Kolkata and they are using Kolkata as a safe corridor."
"Besides these terrorists many other communal forces and big criminals are also present in the city, and various efforts must be made to uproot them from Kolkata," he added.
Bhattacharjee, who is also in-charge of home police department, said the Kolkata Police had less personnel compared to the police-public ratio in cities like Mumbai.
"There were 26,000 personnel in 48 police stations in the city which had a population of over 60 lakh. This ratio is higher in Mumbai and other metropolises of the country," he added.
He also said that criminals operating in cities like Mumbai could not commit crimes in Kolkata because of the efficiency of the city police.
Bhattacharjee also urged citizens to be alert against terrorists, communal forces and criminals operating in the city.