Oslo  - A lithography by Norwegian artist Edvard Munch was stolen late Thursday in a break-in at an art dealer in Oslo, police and media said Friday.

"It is a unique hand-coloured print," Pascal Nyborg who runs the art dealership told broadcaster NRK. He declined to state its value.

According to Nyborg the thief or thieves apparently did not touch any other works, and smashed one of the front windows opening on to the street.

A van used in the break-in was found a few blocks away from the art dealership and is being investigated by police.