India, Sept. 22 -- The group of masked protesters belonging to a "hip-hop" gang influenced by a prominent rapper was possibly behind violence that marred anti-corruption rallies on Sunday, including stone-throwing and arson, according to the Philippine National Police (PNP).

In a press conference at Camp Crame on Monday, Manila Police District (MPD) spokesperson Maj. Philipp Ines said of the total of 93 police officers who sustained injuries during the violent demonstrations, eight suffered lacerations that required stitching and nine were still confined at the PNP General Hospital due to the gravity of their injuries, including fractured bones and head trauma.

As seen on videos posted on social media, rioters clad in black and wearing...