MINNEAPOLIS (AP) - Two people have died after a chain-reaction crash involving four vehicles in Minneapolis.

Police say three cars were stopped at a traffic light on eastbound Olson Memorial Highway when a fourth vehicle struck the third from behind, killing two people in the vehicle that was rear-ended.

The third vehicle then rear-ended the second vehicle, which then struck the back of the first vehicle waiting at the light.

Authorities were investigating whether speed or alcohol were involved. The names of the victims have not been released.

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