Udupi: Mark Castelino, a resident of Bolargudde in Udyavar, was found dead in a concrete drain by the side of the road on Friday morning.
He is thought to have slipped in the dark while returning home the previous night.
The death may have been caused by either injuries caused by the fall on the concrete surface or falling with his face down resulting in suffocation.
He is survived by his wife, who is working abroad and a son.
The Kaup police have registered a case.