This story has been updated.
A motorcyclist was killed after colliding with a tractor-trailer on the Westchester-bound Tappan Zee Bridge Wednesday morning, according to state police.
The incident occurred at 11:22 a.m. on the southbound side of the bridge mid-span, according to state police.
State police said the accident remains under investigation.
The center and right lanes between Exit 10 (9W) and the toll barrier were closed for several hours following the crash.
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