Developments related to the jetliner crash in New York City:
-- American Airlines jetliner en route to Dominican Republic crashes after takeoff from New York's Kennedy Airport, setting homes on fire in Rockaway section of Queens.
-- No immediate word about whether any of the 246 passengers and nine crewmembers on Flight 587 survived.
-- Crash set houses on fire in the densely populated area. At least 15 people reported injured on the ground.
-- Bush administration officials said the FBI believes an explosion occurred aboard the plane. But federal law enforcement official said there was no early evidence of terrorist involvement.
-- White House spokesman Ari Fleischer said there were no unusual communications from plane's cockpit. He said National Transportation Safety Board is leading investigation.
-- All NYC metropolitan-area airports -- Kennedy, LaGuardia and Newark, N.J. -- are closed. Delta Airlines diverts New York City-bound international flights to Boston, Cincinnati and Washington's Dulles airport.
-- Bridges and tunnels into the city are closed except to emergency vehicles. United Nations is partially locked down.