DRESBACH, Minn. - One person is missing after a tugboat went over the rollers of the Dresbach dam in eastern Minnesota.

La Crescent firefighter Cassie Buehler says three people were involved altogether but she doesn't know the condition of the other two people.

Buehler says the Winona County sheriff's department is the main department overseeing the rescue operation. She says her department received a call at around 6:15 a.m. Wednesday asking for help. She had no other information.

KTTC television says dive and rescue crews are at Lock and Dam Number 7, near Dresbach, searching the river.

The dam is the same place where 11 people were rescued after a rented houseboat was swept over the roller gates and capsized May 27.

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