A shooting at a high school prom in Wisconsin has left three people injured.

Aspirus Langlade Hospital officials told WSAW-TV that they treated three patients following a shooting at Antigo High School at about 11pm on Saturday night.

They said two have been moved to another hospital and one is expected to be discharged on Sunday.

WSAW said the entrance to the high school remains blocked to traffic, but parents were being allowed through to be reunited with their children.

The identities of the victims and the shooter were not immediately available.

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