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

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.

She 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.

No one was immediately available for comment Wednesday morning at the sheriff's department.