Update 20:27: New York Governor has just appointed the National Guard to help evacuating the lower manhattan.

Update 20:01: First reports state the fourth plane that crashed down in Pittsburgh was probably supposed to attack the Pentagon building. They are suspicions that the aircraft's pilot managed to stop terrorists and didn't obey to their requests. New rumors state that the United airlines aircraft that crashed in Pittsburgh might have be destructed by US fighter jets.

Update 18:45 GMT: A Delta flight makes emergency landing in Cleveland and all passengers are safely evacuated. Federal officials search the plane for a possible bomb.

Update 18:31 GMT: UK Military sites are put on alert. Arafat presents its sincere condolences to Americans. He also said he was shocked and that this terrorism attack was unbelievable.

Update 18:30 GMT: If you are worried about relatives in the plane crashes you can call the emergency America Airlines number at 1-800-245-0999.

Update 18:28 GMT: The Taliban has denied any responsibility in this event and has expressed their greatest sympathies.

Update 18:17 GMT: Foreign flights over Israel are now forbidden. Russian President Vladimir Putin appeals the US to strike back and offers its help. The U.S. Military has been upgraded to emergency levels of Charlie, and Delta. Those are the highest levels of alert the military can go to.

Update 18:15 GMT: All Major League baseball games in the us canceled

Update 18:03 GMT: American Airlines confirmed that it lost two aircraft. One was Flight 11, a Boeing 767 traveling from Boston to Los Angeles with 81 passengers, nine flight attendants and two pilots. The second was Flight 77, a Boeing 757 flying from Washington Dulles to Los Angeles with 58 passengers, four flight attendants and two pilots. Pittsburgh International Airport has been evacuated

Update 17:56 GMT: Airforce One Has Now Landed. It has landed at Barksville Air Force Base in Louisiana. No further word on where he is going. Air Force One has been accompanied by many fighter jets whereever it will go from Louisiana. China said to be horrified by the attacks.

Update 17:55 GMT: New York and New Jersey are desperate for blood donors. Plane carrying Prince Edward travelling to the US has turned around in mid-air

Update 17:55 GMT: 50 known aircraft are currently in the sky all withing 50 miles of their destination FAA has ordered all of them down. Potentials of further explosions in New York. 3 New York hospital are dealing with injured.

Update 17:45 GMT: Camp David not attacked, false report on television. Reports of the trade center also being bombed are being classed as false, the weight of the planes and the structure of the building likely to have brought it down as well as the huge amount of Kerosen. L. A. Airport evacuated.

Update 17:30 GMT: UK Tory leadership announcement postponed due to attacks. UK Slams the terrorism acts.

Update 17:29 GMT: US closes off the land boarders with Canada. Whole of lower Manhatten being evacuted due to gas leaks. Relatives from the plane crashes are gathering at the airports

Update 17:19 GMT: No explosion on Capital Hill

Update 17:18 GMT: CNN has reported that another plane has just gone off radar and is trying to be tracked.