MOGADISHU (AFP) - Somalia's Islamist Shebab rebels ordered 16 international aid agencies shut Monday in areas they control after armed raids on several offices, and warned more would follow if they did not toe the line. "Any organisation found to be supporting or actively engaged in activities deemed detrimental to the attainment of an Islamic State, or performing duties other than that which it formally proclaims, will be banned immediately without prior warning," the Shebab said in a statement. Witnesses and aid workers reported that Shebab gunmen stormed the offices of several aid agencies.