KARACHI: Police arrested nine activists of the Muttahida Majlis-e-Amal and Jamaat-e-Islami and seized explosive devices from them in Karachi on Saturday. Deputy Inspector General of Police Operations Mushtaq Shah told reporters that acting on a tip off, a police team raided Idara-e-Noorul Haq's central MMA office in Karachi at 3.30am and arrested nine JI and MMA activists. Police also seized one and a half kilogramme of the explosive material, four pistols and 37 bottles of petrol.