A man in Saskatoon faces over two dozen charges after allegedly firing at police while being chased in a vehicle police say may have been stolen.

Police say the chase began when a traffic officer tried to pull a car over on Saturday afternoon.

The officer gave up the chase when the fleeing vehicle began driving erratically, but it was later spotted travelling in the wrong lanes of a street.

Police allege the suspect pointed a gun at officers, and in the later stages of the chase, he allegedly fired at them and police fired back.

Two police vehicles managed to end the chase when they both rammed the fleeing car.

Police recovered a weapon, which they say turned out to be a replica air pistol.

No one was hurt.

Bradley Derek Vestby, 35, is expected to appear in court Monday. He faces various firearms-related charges, as well as charges of dangerous driving, evading police, possession of methamphetamine and possession of break-in tools.

Police say that even though the gun was an air pistol, it is considered a firearm under the Criminal Code.

They say the man also had warrants for his arrest for charges of using a stolen credit card, possession of a controlled substance and being unlawfully in a dwelling.

Investigators said on Sunday that they were still working to determine whether the car had been stolen.