DETROIT -

The FBI is on the trail of a pricey art heist in Detroit.

Nineteen works of art, worth millions, were stolen between April 27 and April 29 from a business in the city’s Corktown area.

FBI spokesman Simon Shaykhet didn’t identify where the art was stolen from, but said it wasn’t on display when it went missing and isn’t insured.

"At this point we are trying to pinpoint if this is someone who knew what this art was and where it was or if this was a crime of opportunity," Shaykhet said.

The missing art includes work by Andy Warhol, Larry Rivers, Francesco Clemente, Philip Taaffe, Joseph Beuys and Peter Schuyff.

Shaykhet said investigators are alerting pawn shop owners and people in the art industry about a theft that could have international impact.

 "We have reason to believe that the art has not only left the Detroit area but may have crossed state lines of left the country," Shaykhet said.

Information about the stolen artwork has been entered into a national stolen art database.

A $5,000 reward is being offered for information. Tips can be called into 313-965-2323.