Alberta's law enforcement watchdog has released more details about what transpired during a Sunday morning police shooting in southeast Calgary.

The agency has seized video from the officers' body-worn cameras and is investigating.

Police responded to calls about a man holding a bat who was acting erratically in a mall parking lot in the 200 block of Shawville Boulevard S.E. around 4:05 a.m., according to a release sent by the Alberta Serious Incident Response Team on Tuesday.

The officers drove up to the man, who was near several outdoor picnic tables.

ASIRT says video from the officers' cameras shows a uniformed officer exit his marked police vehicle, and the man moving toward the officer brandishing a large machete in his right hand and a small folding knife in his left hand.

The officer backed away.

At 4:08 a.m., as the man came closer, the officer fired his pistol, hitting the man in his lower torso.

The man fell to the ground in a seated position, but continued to wave both weapons.

ASIRT says this machete was recovered by police after the man allegedly wielding it was shot in Calgary on Sunday. (ASIRT)

Officers negotiated with the man to try to get him to surrender as additional officers arrived.

Police tried an Arwen less-lethal launcher, which shoots plastic rounds. It was fired multiple times, but the man still didn't drop the weapons.

Then, a tactical unit arrived to try to negotiate. He still didn't drop the weapons.

By this time, it was approximately 7 a.m. The tactical officers used a PepperBall launcher — which fires projectiles that disperse pepper powder — and a Taser. This got the man to drop his weapons, and officers moved in and took him into custody.

The man sustained a broken femur and a penetrating wound. ASIRT said it is investigating which police action caused or contributed to the man's injuries.

Both the machete and knife were recovered by police at the scene.

ASIRT said as its investigation is ongoing, no further information will be released.

The officer who fired the shot is an 11-year member and is now on 30-day administrative leave.