A small southeastern Minnesota town was put on lockdown Friday afternoon.

Houston County Emergency Management posted to Facebook asking people to stay out of the Spring Grove area.

https://www.facebook.com/permalink.php?story_fbid=1259589534085306&id=150402448337359

Another post says Houston County – where the town is located – has closed all government buildings until further notice.

Authorities eventually explained that they'd received a bomb threat by telephone.

https://twitter.com/NorthIowa/status/759115905833938944

The sheriff's department told WXOW that someone had called inba report of an explosive in a van.

ABC 6 says a bomb squad from the Twin Cities arrived sent a robot to check out the vehicle.

While the search was underway, the owner told the station he had no clue why the squad was looking at his vehicle.

https://twitter.com/ABC6NEWS/status/759157285897711616

https://twitter.com/mkruzel5/status/759164058104795136

The Star Tribune reported late Friday that Spring Grove police issued an all clear after no explosives were found and are investigating the phone call reporting the explosives.