The first incident occurred on the Super Highway near Pakistan Kanta, where a speeding truck hit a motorcycle, killing the rider on the spot.

Rescue teams shifted the body to a nearby hospital, where efforts were underway to identify the victim.

In a separate crash near Do Minute Chowrangi in North Karachi, a water tanker struck another motorcycle, leaving the rider dead.

The body was also moved to a hospital, but could not be identified immediately.

Rescue officials said both accidents appeared to be caused by speeding.