Halifax Regional Police are taking a closer look at the actions of some off-duty officers following a fight in Digby that led to accusations of racism and police brutality.

Two black men say they were the target of racial slurs after a late-night encounter with off-duty police outside a bar in downtown Digby last month.

A fight broke out, and a Halifax police officer was knocked unconscious.

Const. Jeff Carr, spokesman for Halifax police, said Tuesday the matter is under review.

"We will be looking into the incident and investigating to determine if there was inappropriate conduct on behalf of any Halifax Regional Police member," said Carr.

"That said, we are not aware of any such conduct by any of our members."

Nathaniel Fells, 19, and William Drummond, 20, said some of the off-duty police and RCMP, who were in town for a charity event, yelled the slurs, prompting the fight.

Drummond said a Digby RCMP officer used a stun gun on him, then arrested him.

But the off-duty police involved in the fight were ushered out of the downtown area, Drummond said.

Staff Sgt. Phil Barrett, the commander of the Digby RCMP detachment, has called in the RCMP's major crimes division to investigate.

He told CBC News he had advised the visiting police officers to avoid the bar near where the fight took place.