Two men, one of whom showed a knife, robbed the Dairy Queen but got no money and ran, Miamisburg police said. 

2 men with knife rob Dairy Queen on Main

A K-9 unit was called in but lost the scent.

There were no injuries from the robbery, police said.

EARLIER: An armed robbery has been reported at the Dairy Queen on Main Street and police are en route.

Police were dispatched to the business, 326 S. Main St., at about 10:20 p.m.

We have a crew en route and we'll bring you the latest details as we get them.