Police last night escorted passengers from a Premier Motor Services bus at the Ballina bus interchange after they were threatened by two men on the bus, with one of them allegedly holding a gun.
It is believed one of the passengers alerted police to the incident via a mobile phone.
Police arrived at about 6.15pm after reports that two men had been acting in a threatening manner towards the 20 to 30 passengers on the bus. Police boarded the bus, handcuffing the two men and taking them into custody.
Police also removed what they believe to be a replica pistol from the bus.