KARACHI - Advisor to the Prime Minister for Interior Rehman Malik has said that a letter purported to be from Ajmal Kasab, a suspect in Mumbai attacks arrested by India, had been received and his citizenship and identity was being minutely examined. Talking to media at the Passing-Out Parade of Pakistan Rangers Sindh on Monday, the Advisor said that after confirming the citizenship of the suspect a decision on whether or not to provide him a lawyer would be taken. The Advisor said Pakistan is a sovereign country and would not take pressure from any quarter. He asserted that Pakistan cannot be pressurised and it would take decisions under its own laws. The Advisor stressed that no one would be allowed to use Pakistani soil for terrorism. In order to overcome the menace of terrorism related laws were being made more stringent, he said. To a question, he said arrest of Sindh National Front chief Mumtaz Bhutto was a provincial matter. He however said that everyone, whether he (Rehman Malik) or Mumtaz Ali Bhutto had to abide by the laws of the land. Replying to a question, Rehman Malik said that security had been further beefed up in Karachi in order to maintain peace during Muharram-ul-Haram in Karachi. He added that army could be called to assist the civil authorities if a situation warranting this arose during Muharram-ul-Haram.