Srilanka, Nov. 14 -- Police in Bogawantalawa have launched an investigation to trace a suspect who allegedly robbed a three-wheeler driver of cash and gold jewellery valued at over Rs. 500,000 after drugging him.

The driver, a resident of Pettiyagala Estate, Bogawantalawa, filed a complaint stating that the suspect boarded his three-wheeler near the Karkasoal Estate office under the pretext of hiring a ride.

The driver told police the man became very friendly during the journey and offered him a fruit juice bottle to drink.

After consuming the beverage, the complainant said he became drowsy and fell asleep.

Upon waking, the victim discovered that Rs. 150,000 in cash and a gold chain weighing one sovereign had been stolen.

The total v...