Attackers shouting racist slurs opened fire on a Muslim prayer leader and scrawled a swastika in front of his door in the latest in an increase of racist incidents on the French island of Corsica, police said. The Moroccan imam was not injured in the attack at around 2:30 a.m (0130 GMT) Saturday at his home, which doubles as a mosque, in Sartene in southern Corsica. Having first knocked at the imam's door, the attackers shouted racist slurs and fired about ten gunshots when he came to answer. Before leaving, the group of several men also scrawled a swastika on the ground and the Corsican words "Arabi Fora" _ Arabs out. There were no immediate claims of responsibility. Police were investigating.