MINNEAPOLIS (WCCO) — Two people are dead after a four-vehicle crash in Minneapolis overnight.

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According to authorities, the vehicles were heading eastbound on Olson Memorial Highway when the accident occurred. Three cars were stopped at the stoplight, at the intersection of Olson Memorial Highway and Morgan Avenue, when a fourth vehicle rammed into them.

The impact of the fourth vehicle rear-ending the third vehicle killed the two occupants inside that third vehicle — a 20-year-old man and a 21-year-old woman.

That caused a chain reaction, where each vehicle then hit the one in front of it.

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The driver of the fourth vehicle was taken to Hennepin County Medical Center and is in stable condition.

Three people from the second vehicle were also taken to HCMC with non-life threatening injuries.

No arrests have been made.

Police say it is not clear at this time whether speed or alcohol were contributing factors in the case but it continues to be investigated.

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The medical examiner will release the victims’ names and the nature and cause of the death at a later date.