Police were tracking down a Singaporean man known as ‘Boy Setan’ who was the prime suspect for smuggling drugs into the republic using a drone, recently.

Johor police chief Ayob Khan Mydin Pitchay said the man whose real name was Mohamad Azli Ahmad Said, 40, was believed to be smuggling drugs in the afternoon around the City Square area.

“We believe he is still in Johor. He came here once in a while to smuggle drugs and went back (to Singapore), but with...