WASHINGTON (AFP) - The United States imposed Wednesday sanctions on an Al-Qaeda backer and three leaders of Laskhar-e-Taiba, believed behind last years Mumbai attacks. The US Treasury said it was imposing an assets freeze on the four, identified as Fazeel-A-Tul Shaykh Abu Mohammed Ameen Al-Peshawari, Arif Qasmani, Mohammed Yahya Mujahid, and Nasir Javaid. Ameen Al-Peshawari allegedly provided assistance, including funding and recruits, to Al-Qaeda and the Taliban militia currently fighting to regain control of Afghanistan. Qasmani is said to be the chief coordinator for Laskhar and Mujahid the head of the groups media department while Javaid had served as its commander in Pakistan. Laskhar is widely thought to have been behind last Novembers 60-hour bloodbath in Indias Mumbai city which led to 166 deaths. The Treasury said its action came two days after Al-Peshawari, Qasmani and Mujahid were added to a UN blacklist of individuals and entities linked with Osama bin Ladens Al-Qaeda and the Taliban. All UN member states are obligated to freeze the funds and other assets of listed individuals and entities included on the blacklist, and to apply other sanctions such as travel ban and arms embargo, a Treasury statement said. Qasmani was also linked in the Treasury statement to the July 2006 train bombing in Mumbai that killed 186 people and the February 2007 Samjhota Express bombing in Indias Panipat city which killed 68 people. He allegedly conducted fundraising activities on behalf of Lashkar in 2005 and utilised money that he received from an alleged Indian crime figure and supporter Dawood Ibrahim to facilitate the July 2006 train bombing.