With no clue yet in the robbery of more than Rs. 18 lakh from the Bank of Baroda branch at Perungudi here on Monday, the Chennai Police formed 25 special teams.

While Commissioner of Police J.K. Tripathy held a meeting with senior police officials, the teams working under the direct supervision of the Deputy Commissioner of Police (Adyar) R. Sudhakar spread out to check various aspects.

Police referred the fingerprints lifted from the scene of crime to the National and State Crime Record Bureau to check if they matched with any of the known offenders. Since preliminary inquiries indicated the involvement of some north Indians in the robbery, investigators went to a couple of States to look for suspects. Mobile phone handsets belonging to the bank employees taken away by the armed gang remained switched off, the sources said.

The bank officials told police that they had no details of the serial number of currency notes robbed by the gang. “Though there were some fresh wads of Rs. 500 denomination notes, the accused did not take them. We are checking the details of guests who stayed in resort, farm houses and lodges,” a police official said.

Based on the inputs given by the bank staff, police were developing computer-aided portraits of the suspects.