Arms and a large cache of ammunition were seized on Sunday during a raid on rented accommodation of suspected arms dealer Monotosh Dey who was arrested by the Special Task Force (STF) of Kolkata Police along with two suspected members of Bangladeshi militant organisation, Ansarullah Bangla Team (ABT), a front for Al Qaeda in the Indian subcontinent. "We have seized a country made revolver and a 9 mm pistol along with a large cache of ammunition during the raid at Dey's rented accommodation in the Raghunathpur area of Bashirhat," a police officer said.