The Rapid Action Battalion (RAB) recovered four grenades from city's Maghbazar Sunday morning. "Three 'Arges' grenades were recovered from the 'Doctor's Lane' while another from a dustbin near the T&T office in capital's Maghbazar area," said Captain Mizan, operational officer of RAB-3. He also said that a sweeper informed the RAB team of the bombs while they were patrolling. "Our team rushed to the spot and found the grenades," Mizan added. Later, a bomb disposal team of the elite force rushed to the spot and handed over the grenades to the Ramna police after examination.