MANILA - The Metropolitan Manila Development Authority (MMDA) heightened its watch against individuals who toss rocks at autos that go through underpasses in Quezon City and in Mandaluyong.

MMDA Traffice Discipline Office executive Crisanto Saruca said the organization has officially alarmed its movement constables to look for suspicious acting individuals on top of the underpasses.

Saruca included that the MMDA has likewise begun introducing extra shut circuit TV cameras at the underpasses and has additionally begun organizing with the police units of Mandaluyong and Quezon City.

The Quezon City Police District prior cautioned drivers of stone-tossing occurrences along the Quezon Avenue underpass that goes through Agham Road to EDSA.

Police said they are especially vigilant for "batang hamog" or road kids as those supposedly behind the stone tossing occurrences.

MMDA Chairman Francis Tolentino additionally prior said that the office is likewise wanting to introduce wire lattice fences on the highest point of the underpasses to dissuade rock hurlers.

"Doon mismo sa taas ng pinangyarihan nang sa ganoon matutukan. Baka makadisgrasya sa buhay ng motorista," he said.

Reports said that no less than three drivers have been casualties of rock tossing in Quezon City.

Beside the Quezon Avenue underpass, the MMDA has likewise gotten reports of asserted rock tossing occurrences on autos that go through the EDSA-Shaw Boulevard underpass in Mandaluyong City.