NIAGARA (WLUK) -- The Marinette County Sheriff Office has closed off all lanes of Highway 141 at Highway Eight eastbound in northern Wisconsin.

The state Department of Transportation first issued an alert about the closure around 6 p.m. Monday. The department initially expected the closure to last two hours.

Northbound traffic is instructed to follow Highway Eight east and then go west on Highway Two. Southbound traffic is advised to go east on Highway Two and then south on Highway Eight.

DOT said the sheriff's office is responding to an "incident," which began at 5:55 p.m., but did not reveal more details.

FOX 11 reached out to the Marinette County Sheriff Office for more information but has not heard back.