Cheeky vandals leave impression with Vaseline

The tale of the tail end may have reached an end. At least that's what folks in Valentine, Neb., hope after someone slathered his bare backside — and front side — with Vaseline, then left prints on windows of businesses, schools and churches.
The local Midland News newspaper called the vandal or vandals "lewd, lubricated, lurching lunatics." A radio station dubbed them "the buttcheek bandits.""It's just a weird deal, but it's weird enough to cause a little bit of concern," Valentine Police Chief Ben McBride. "Who in their right mind would do something like that?"McBride has fielded about 20 reports.
The last official one came in mid-October, although a Valentine businessman said he saw a print Thursday morning on the door of a dental clinic. The wrongdoing is more disgusting than destructive. There has been no physical damage, although producing the printings would involve indecent exposure.
McBride said that one or more males are suspected and that there may have been copycat printings.

Can the police identify them like they do finger prints?