The so-called Islamic State group has published photos purporting to show the destruction of a Roman-era temple in the central Syrian city of Palmyra.
UNESCO has called the destruction a war crime.
Five photos were distributed on social media showing explosives being carried inside, being set around the walls of the temple, the large explosion and then rubble.
The militants blew up the temple of Baal Shamin on Sunday, according to the Syrian antiquities chief, but had not published visuals until now.
Islamic State release photos showing destruction of ancient temple at Palmyra: http://t.co/b8rNieDGm2 pic.twitter.com/HGzRHTg0Lw
— VICE News (@vicenews) August 25, 2015
The images have not been independently verified.
The temple was built nearly 2,000 years ago and UNESCO has described it as a symbol of Syria's historical cultural diversity, which it says Islamic State is seeking to obliterate.