Gunmen have opened fire on a group of teenagers waiting at a bus stop near a school in the US.

The incident in Detroit, Michigan, left seven wounded including two who are in critical condition.

Five of the teens had just left Cody Ninth Grade Academy, where they were taking summer classes, when they were shot.

Four boys and three girls ranging in age from 14 to 17-years-old were hospitalised, two of them, a 16-year-old boy and a 17-year-old female, in critical condition, said Deputy Chief James Tolbert.

Detroit Police are looking for two suspects in a green minivan and police are reviewing video taken from the gas station's security cameras and took a disc containing the footage.

Schools spokesman Steve Wasko said there was "nothing that we're aware of at this time" linking the shootings with any fight or dispute at the school.

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