KARACHI, 18 August — Islamabad has asked the British government to stop Altaf Hussain, the chief of the ethnic-based Muttahida Qaumi Movement, from interfering in Pakistan’s politics, an Urdu-language daily Qaumi Akhbar reported Thursday. In a letter to British authorities, Islamabad pointed out that the MQM leader despite now being a British national was addressing political meetings in Pakistan through telephone and inciting his party workers to violence and anti-state activities. This, the letter said, was tantamount to interference in the country’s internal affairs which the British government should take note of. Altaf, who went on self-exile in 1991, has set up an international headquarters of the MQM in London, from where he has been regularly addressing his party members and supporters in Karachi and several other cities in Sindh. Altaf won a legal battle in England for his nationality and has now been issued British passport.