Activists of a Muslim party today pelted stones at the US consulate here protesting against a controversial film deemed offensive to Islam, police said.
Around 300 protesters belonging to the Tamil Nadu Muslim Munnetra Kazhagam (TMMK) tried to picket the US consulate here but were stopped by police, they said.
Some window panes were damaged but nobody was injured, police said, adding the protest caused traffic pile-up on the arterial Anna Salai where the consulate is located.
Anti-US protests have erupted in several countries over the controversial film. US Ambassador to Libya, Christopher Stevens, along with three other Americans was killed when a mob attacked a consular office at Benghazhi in that country on Tuesday night.
Chennai Police Commissioner J K Tripathy told PTI that security has been stepped up for the US mission.