In a video which has gone viral, the cops three of whom were in plain clothes can be heard asking the couple walking along the beach to show their ‘Nikahnama'(marriage certificate).
The footage further shows the cops manhandling the woman as she tried to make a video of them.
The man can be heard screaming that they are husband and wife but to no avail.
Additional Inspector General (IG) of Police Dr Amir Sheikh took notice of the incident after the video went viral.
The four cops were taken into custody and suspended, the Karachi police chief said.
“The four cops will be sacked,” he added.