Two United Airlines passenger planes crashed Tuesday morning, one near Pittsburgh and the second at a location the airline did not immediately disclose.
The airline said a total of 110 people were aboard the two planes.
United Flight 93, a Boeing 757, left Newark at 8:01 a.m. Eastern Time, headed for San Francisco with 38 passengers, two pilots and five flight attendants, the airline said.
An emergency dispatcher in neighboring Westmoreland County received a cell phone call from a man who said he was a passenger locked in the bathroom on that flight, said dispatch supervisor Glenn Cramer.
The man repeatedly told officials the call was not a hoax. "We are being hijacked, we are being hijacked!" Cramer quoted the man from a transcript of the call.
That flight crashed about 80 miles southeast of Pittsburgh, near Johnstown, Pa., authorities said.
"It shook the whole station," said Bruce Grine, owner of Grine's Service Center in Shanksville, about 2@1/2 miles from the crash. "Everybody ran outside, and by that time the fire whistle was blowing."
United Flight 175, a Boeing 767, left Boston at 7:58 a.m. Eastern Time, bound for Los Angeles. That aircraft carried 56 passengers, two pilots and seven flight attendants, the airline said.
The airline would not say where that plane crashed, but confirmed it was down.
United said it ws sending a team to Johnstown, Pa., as soon as possible to assist in the investigation and to provide assistance to family members.
Today's events are a tragedy and our prayers are with everyone at this time, Goodwin, said.
United said friends or family members who wanted information on the flights may call 1-800-932-8555. United also said it would post any information it has on its Web site, www.united.com.
The Federal Aviation Administration has ordered all departing flights canceled nationwide, and that any planes already in the air were to land at the nearest airport.
It was not immediately known if the plane might have been trying to land at the Somerset County airport when the crash occurred.
The crash came the same morning that terrorists crashed two planes into the World Trade Center in New York City and the twin 110-story towers collapsed. Explosions also rocked the Pentagon and the State Department and spread fear across the nation.
It is unclear whether the incidents are related, though President Bush said the New York attacks were clearly the work of terrorists.
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