A 20-year-old Tacoma man pleaded not guilty this afternoon to two counts of first-degree robbery for allegedly holding up two banks in four days.

Jacob Scott Brooks was arrested Monday night shortly after a U.S. Bank in the 17300 block of Pacific Avenue in Spanaway was robbed at 6 p.m.

Brooks entered the bank with a handgun and demanded money from two tellers before fleeing, according to charging documents.

Pierce County sheriff’s deputies responded to the scene and learned a suspect had fled on a nearby Pierce Transit bus. The deputies stopped the bus to speak with Brooks and the other man.

After a short foot pursuit, Brooks was arrested.

A backpack with cash and an airsoft pistol that had been tampered with to resemble a real handgun were found on the bus, Pierce County sheriff’s spokesman Ed Troyer said.

Brooks is also charged with a July 30 robbery at a U.S. Bank branch in Tacoma.

In that case, he allegedly wore a bandana over his face, carried a handgun and forced a teller to fill two bags with cash. He told her “Thank you” and “You did a good job” before fleeing.