India, Sept. 22 -- Department of National Defense (DND) Secretary Gilberto Teodoro Jr. on Monday expressed concern over the involvement of the youth in the violence that marred some of the anti-corruption rallies in Manila.

In a radio interview, Teodoro said the involvement of the youth in Sunday's violent protest is a "national security issue" that needs to be addressed immediately.

"Ito po ay isang issue ng national security kung ganoon pa po ang kabataan, kung saan nila napupulot ito. Ito'y dapat tumbukin kaagad at maremedyohan (These youths and what inspired them is a national security issue and we must get to the bottom of this immediately)," he said.

Teodoro said there were unvalidated reports that illegal drugs played a role in ...