A man is behind bars after allegedly robbing an Arcata bank. Police say 63-year old Stephen Long entered the Bank of America just before five this evening. Bank employees told police he approached a teller with a note demanding money. The teller complied and gave Long an undisclosed amount of cash. Acting on an anonymous tip, the Arcata Police Department located Long at a motel on the 1700 block of G street. He was taken into custody without incident and booked into the Humboldt County Jail.