CALGARY -- Calgary police are looking for information to help identify four individuals they think may have information about an incident in Marlborough Park, where a couple was robbed at knifepoint. On May 15, at around 8 p.m., a couple was walking in an alley behind the 5600 block of Memorial Drive when they were approached by some people. The man and woman were separated, and the man was assaulted and robbed by an individual brandishing a machete-type knife. The suspects took off on foot, towards the alley behind 47 Street S.E., where the female victim was bear-sprayed and robbed. Security footage obtained by the police revealed four people who police hope have information about the incident.