Somali insurgents have vowed to intensify attacks during the Muslim holy month of Ramadan. The insurgents are trying to topple Somalia's government and drive out Ethiopian troops propping up the administration. Heavy shelling was heard Wednesday in Mogadishu and a witness says at least two people were killed. Muslims are expected during Ramadan daylight hours to abstain from food, drink, smoking and sex to focus on spiritual introspection. But the Islamists' spokesman Abdirahin Issa Adow says fighters have "decided to redouble attacks against the Ethiopians and their stooges during the holy month of Ramadan," which began this week.