An organization that investigates incidents involving police in Alberta is looking for two people who shot video while Calgary officers were taking a man into custody last month.

On Feb. 26 at about 1:15 a.m., two members of the Calgary Police Service (CPS) were taking a pedestrian into custody at 16th Avenue and Second Street N.W.

Two men walked by as the incident occurred, the Alberta Serious Incident Response Team (ASIRT) said in a release.

"One of the pedestrians was observed videotaping the incident with his cellphone," the release said.

The witnesses were white, ranging from 20 years old to their early 30s. Both were wearing Calgary Flames jerseys and possibly baseball caps, ASIRT says.

The police vehicle was a Ford truck with Calgary police decals.

Anyone who may have witnessed the incident is asked to contact ASIRT at 403-592-4306.

Officials are not releasing more details about the incident while ASIRT's investigation continues.