GARBA MUHAMMAD GUNMEN on motorbikes stormed a primary school in the northwestern Nigerian state of Kaduna and kidnapped three teachers but no children, a state official said yesterday, after the fifth school abduction in three months. It was the first attack on an elementary school in a wave of such attacks in which more than 700 people have been abducted since December. Samuel Aruwan, Kaduna state's commissioner for internal security, said in a press briefing that Rema Primary School, in the Birnin Gwari Local Government Area, was attacked at around 8:50am (0750 GMT) on Monday. He said children fled as…