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Two airplanes clipped while preparing to take off from the runway at Newark Airport Wednesday evening, officials said.

Scandinavian Airlines Flight 908, headed to Oslo, clipped its left wing against the tail of ExpressJet Flight 4226, which was going to Nashville, officials said. The planes were taxiing for departure shortly before 7:30 p.m.

The Scandinavian Airlines Airbus A330 was directly behind the ExpressJet Embraer E145 on a taxiway, and was turning right to get onto another taxiway.

The ExpressJet plane was towed back to the gate, and the SAS plane taxied back to the gate. Passengers were taken off both planes. No injuries were reported.

The accident is being investigated. Scandinavian Airlines, which has hubs in Norway, Sweden and Denmark, didn't immediately respond to telephone messages and emails seeking comment.

ExpressJet Airlines released a statement Wednesday night saying it is "working in coordination with officials to determine a cause."

ExpressJet, which bills itself as the world's largest regional airline, operates as a United Express partner from United's Newark hub. United, which has headquarters in Chicago, is part of United Continental Holdings Inc.