Sindh Assembly Speaker Nisar Ahmed Khuhro on Thursday said the supply of arms and ammunition to Karachi and presence of the banned organizations are the main reasons behind the law and order problem in the city. He called for immediate blockade to this large scale arms supply to ensure peace and security in the city. For this purpose, there should be strong vigilance at the borders of Sindh and at all entry points of Karachi. Heavy vehicles bringing different cargo to the city should also be dully checked in a bid to check possible supply of arms. The speaker talking to a media here at Sindh Assembly secretariat said the army would remain standby during Ashura. However, he continued that giving control of the city to the armed forces is no solution to any problem. During undemocratic regime of General Pervez Musharraf, Karachi was more prone to bomb blasts and suicide attacks, he added. He said that PPP-led government was trying its best to provide security to life and property of the people through good governance and merit in appointments and postings of police officers. He appealed to political parties to support the government efforts to maintain security, peace and harmony especially in Karachi. He said the recent bomb blasts in the city were aimed at fanning sectarian clashes. However, he said, such terrorist activities would not weaken the government. Our law enforcing agencies would have to react quickly and in organized way. The speaker also informed the media about his meeting with the outgoing Consul General of Iran in Karachi, at the Assembly.