"They blew up three tower tombs, the best preserved and most beautiful," Maamoun Abdelkarim told AFP.
News of the destruction at the world-renowned site, captured by the jihadists in May, follows their demolition of the ancient shrine of Baal Shamin and the 2,000-year-old Temple of Bel.
"We received reports 10 days ago but we've just confirmed the news," Abdelkarim said.
"We obtained satellite images from the US-based Syrian Heritage Initiative, taken on September 2."
The whole of Palmyra, including the four cemeteries outside the walls of the ancient city, has been listed as a world heritage site by UNESCO since 1980.
In its listing, the UN agency singles out the tower tombs as the "oldest and most distinctive" of Palmyra's funerary moments -- "tall multi-storey sandstone buildings belonging to the richest families".
"On the fronts of those that survive, foremost among them the Tower of Elahbel, there is an arch with sarcophagus halfway up, which in ancient times supported a reclining statue," it says.
Gruesome violence and the destruction of priceless artefacts have become hallmarks of IS as it has expanded its so-called "caliphate" straddling Iraq and Syria.
In addition to damaging sites in Syria, IS has destroyed statues, shrines, and manuscripts in the Iraqi city of Mosul, and demolished the ancient Assyrian city of Nimrud.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
