A small TransAsia flight crashed into a Taipei harbor Wednesday, injuring "a number" of the estimated 53 passengers who are still reportedly awaiting rescue.

Flight GE 235 crashed shortly after takeoff, via the Straits Times:

The ATR-72 turboprop aircraft with 58 onboard was flying from Taipei to the offshore island of Kinmen when it crashed into the Keelung River after apparently ramming into a highway viaduct, Taiwan's Central News Agency (CNA) said. Taiwan's United Daily News said about 10 people have been sent to hospital, and more than 40 are still awaiting rescue.

The New Taipei City Fire Department has despatched five rescue teams, equipped with speed boats, to the accident site near the Nanyang Bridge in Xizhi district, CNA said.

It's also the second TransAsia crash this year—48 people died in July when Flight 222 crashed in a storm just outside of Penghu.

Update—2/4 12:15 a.m.:

Several news outlets are reporting fatalities—anywhere from two to eight or nine passengers were reportedly killed in the crash, while a few survivors were hospitalized, say Reuters, the BBC and the Straits Times.

The Guardian is reporting that the taxi driver whose car was clipped by the plane suffered a head injury and concussion but was hospitalized with stable vital signs.

Update—2/4 7:32 a.m.:

Taiwan's Civil Aeronautics Agency confirmed to NBC News and the New York Times that 23 people are confirmed dead in the crash, and 20 remain unaccounted for.

Just before the crash, the Times reports, the plane's pilot radioed air traffic control to report an engine problem: "Mayday, mayday. Engine flameout."

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