Authorities in Arlington have cautiously announced that they may have apprehended a bank robber who has struck as many as six banks in recent months.

According to a press release, Arlington County Police have arrested 57-year-old D.C. resident Peter Cifala on Friday, charging him with one robbery. The robbery Cifala was charged with, however, “is believed to be related to a series of five other bank robberies that occurred over the past three months in Arlington County.”

Police are still investigating the series of robberies, which has included various branches in both Clarendon and Falls Church and along Lee Highway.