A police officer has been arrested on suspicion of involvement in a string of bank robberies. The Police Inspectorate told the Czech Press Agency on Thursday that the man, who has been dismissed from the force, is believed to have robbed a bank near the western town of Teplice on Monday and to have also been responsible for at least three other heists. The robberies are reported to have causes damages of more than one million crowns. On Monday the suspect tried to drive away from the bank with some 400,000 crowns but was stopped by a prepared police squad. The 36-year old was a policeman for 13 years.