NEW YORK (CBSNewYork) – Eleven people were injured after a multi-vehicle accident Friday night at a busy Harlem intersection.

WCBS 880’s Peter Haskell described the accident as a nasty-looking crash, on the westbound side of 125th Street at Lenox Avenue.

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A delivery van slammed into the back of a four-door Nissan, ending up right at the back window.

A witness described what he saw.

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“I think once that the car in the front pulled the brakes too fast, and then the vehicle in the back happened to slip up on that second car, and then the motorcycle guy – he flew up into midair going onto the floor,” he said.

The motorcycle was behind the van, and the silver Nissan had rear damage and ended up on Lenox Avenue.

Seven people have serious but non-life-threatening injuries and four have minor injuries, EMS said.

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The injured were taken to Mount Sinai St. Luke’s Hospital and Lincoln Medical and Mental Health Center., FDNY said.