The area was cordoned off after the explosion
A bomb was left inside an abandoned car which exploded at an Ulsterbus depot in County Down, the police have said.
The blast happened as the Fire Brigade was extinguishing a blaze in the vehicle at Edward Street, Newry, County Down.
No-one was injured but shrapnel damage was caused to a bus and two others sustained scorch damage in the incident which happened shortly after 2200 BST on Friday.
The police said that Army technical officers who examined the scene discovered an explosive device inside the vehicle.
Police also said a car was seen speeding away from the Ulsterbus depot before the incident.
A senior police officer described the attack as "a reckless act".
The site was cordoned off. The vehicle has since been removed from the scene.
Anyone who may have information about the incident is urged to contact the police.