Halton Regional Police are appealing for witnesses after a man and woman were killed in a motorcycle crash in Burlington on Thursday night.

Police are still trying to identify the cause of the fatal crash, which occurred on Guelph Line, north of the QEW, shortly after 9 p.m.

The man and woman, both 31, were riding a northbound 2010 Kawasaki Ninja 600cc motorcycle when, for reasons unknown, the bike went out of control as the man attempted to make a left turn onto Mountainside Drive, police said.

The motorcycle flipped, and the Waterdown man and his female passenger, who was from Burlington, were thrown to the ground, police said.

After the pair was ejected, a 2007 Chevrolet Cobalt driven by a 42-year-old Hamilton man struck the motorcycle and the man in the intersection.

Police said they do not know if the car contributed to the reason the motorcycle went out of control.

Anyone with information about the crash is asked to call investigators at 905-825-4747 ext. 5065.

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