Ottawa police have one suspect in custody but are still hunting for two or possibly three other suspects following a commercial robbery in Nepean.

Police received a call about a robbery on the 100 block of Concourse Gate, off Colonnade Road, at 11:55 a.m.

The first suspect was taken into custody about half an hour after the robbery occurred.

The tactical, robbery and K-9 units have all responded to the scene. Photos taken by witnesses show heavily armed officers with dogs searching a wooded ravine.

Police have not indicated whether the suspects are armed, but have asked residents to avoid the area near Colonnade Road and Prince of Wales Drive.

Video shot from the passenger seat of a passing vehicle shows the manhunt in Nepean.