The arrest of Mawlawi triggered a new round of fighting between Islamists and Alawites in Tripoli.[9][10] Two to four people were killed when fighting erupted on the night of 12 May 2012.[2][11][12] In the evening of 12 May, rocket-propelled grenades were used in an Alawite enclave and surrounding Sunni neighbourhoods in the port city.[citation needed] Hours before the clashes, Lebanese troops exchanged fire with a group of Islamists protesting in Tripoli for the release of a terrorism suspect.[11] The Islamists tried to approach the offices of the pro-Syrian Syrian Social Nationalist Party.[11] In all, three of the dead were reportedly Sunni civilians, while one was an army officer.[12]