Gunmen fired rocket-propelled grenades at Mogadishu police stations in the latest of a wave of guerrilla-style ambushes on the government and its Ethiopian allies, residents said on Sunday, Reuters reported. The assailants -- whom the government says are remnants of an Islamist movement ousted from Mogadishu over the New Year -- also sprayed machine-gun fire at police guards. At least seven people were wounded. Government spokesman Abdirahman Dinari vowed that the perpetrators would be brought to justice: "We will make sure such individuals are filtered from the society and apprehended." Leaflets circulating at the weekend in Mogadishu, and purporting to be from the defeated Somalia Islamic Courts Council (SICC), urged residents to avoid collaboration with Ethiopians or face "losing lives and property".