Police have opened fire on a lorry which refused to stop in west Belfast, police have said.
The shots were fired after the vehicle failed to stop and collided with a car and a police vehicle in the St James Park area off the Falls Road.
One man was arrested and the Police Ombudsman's office has been informed. There were no injuries.
A representative of the Ombudsman, which invesigates all police shootings, is at the scene of the indicent.
Chris Mahaffey of the Ombudsman's office said he understood police had tried to stop the lorry on the M1 motorway.
"There followed a short pursuit.
"During that I believe that one of the officers got out of the police vehicle he was in and attempted to confront the driver, during which I'm aware a police officer discharged his firearm," he said.
"It will be a thorough investigation - we'll be looking to establish the justification and the reasons why the officer discharged his firearm at the vehicle and this could take some considerable period of time."
Mr Mahaffey said Customs and Excise officers had started an investigation into the load that was on the lorry
The SDLP's Alex Attwood said the police would have to give a "sufficient explanation" as to why shots were fired.
"It gives rise to public anxiety, particularly when it occurs in a heavily built up area," he said.
"The police have to justify why this vehicle was chased off the motorway and why live fire was used, though there are suggestions that this vehicle was chasing through a built up area and crashing through red lights."
Sinn Fein have expressed concern at the shooting.
West Belfast councillor Marie Moore said she had heard that the van was forced off the motorway into a residential area.
"This PSNI operation appears to have been carried out with absolutely no regard for the safety of the people of this community," she said.
"I am very concerned at reports that this van was forced off the motorway into a built-up residential area and that a number of shots were also fired by the PSNI in an area where many children and families would have been going about their business."
It's getting to the stage even HGV's are trying to outrun the traffic boys now.
Police open fire on LorryNote that according to Sinn Fein the driver was "forced" off the motorway into a crowded residential area.
Wonder could he have been trying to make it to a "safe" area.
Merged two topics
Custys are investigating whats on the inside, now that IRA have "finished" their war, its full of drugs or smuggled ciggys me thinks
Forgot that one, very common between the subversives and members of the nomadic community
Driver was charged with attempted murder of the police officer today and remanded in custody.
BBC Story