A man using a blood-filled syringe robbed a bank in the Ballina CBD last Wednesday afternoon.
Police say that just after 3pm on Wednesday, the man entered the bank in River Street and demanded money from the teller, while armed with the syringe.
The teller handed over cash and the man fled. He was last seen on River Street.
No one was injured during the incident.
Officers from Richmond Local Area Command are investigating. Anyone with information is urged to come forward by calling Crime Stoppers on 1800 333 000.