Unknown burglars have victimized the office of Expressbank, on `Tsar Simeon The Great` blvd. in Stara Zagora, the police in town inform. According to experts, this type of vaults usually keep around BGN 100-150, 000 in cash, but, taking into account that the robbery has been committed on Monday, it is highly probably that the criminals have taken away only a small amount of money.