A half-naked man briefly entered a McDonald's in Belcamp, the Harford County Sheriff's Office.
The man, described as a white man between 30 and 40 years old, came into the business without pants for a moment at about 3 a.m. on Friday, Sheriff's Office spokesman Edward Hopkins said Tuesday.
He then ran out of the restaurant, in the 1300 block of Riverside Parkway, toward Policy Drive, Hopkins said.
Deputies who responded could not find anyone in or around the business, Hopkins said.
The man was also wearing a black, hooded sweater and carrying red, boxer-style underwear.