Historic statues and other artefacts have been taken from the National Museum of Syria in the capital, officials say.
The burglary was noticed on the start of the week, when employees reportedly found that one of the museum's doors had been broken from the inside.
The half-dozen stolen sculptures were crafted from marble and traced back to the ancient Roman times, a source informed the media outlet.
Cultural heritage officials said it had launched a probe to establish the "events surrounding the theft of a group of artifacts", and that measures had been implemented to strengthen protection and observation methods.
The chief of domestic security in Damascus province, Brig-Gen Osama Atkeh, was quoted by the government press as stating that authorities were examining the theft, which he said had focused on several "historical artifacts and valuable objects".
He added that museum protectors at the institution and other individuals were being interrogated.
The Damascus Museum, which was founded in the early twentieth century, houses the significant cultural treasures in the country.
It includes clay cuneiform tablets dating back to the Bronze Age from Ugarit, where indications of the earliest writing system was uncovered; early centuries CE ancient art from the ancient city, one of the most important cultural centres of the historical period; and a third century synagogue that was established at an ancient location.
The museum was forced to close in 2012, one year after the beginning of the internal strife. Most of the artifacts was transferred and kept at secure places to protect them.
It reopened partially in 2018 and returned to normal in the beginning of the year, a month after insurgents deposed Syria's former leader.
Each of the six of nationally recognized sites were affected or partially destroyed during the conflict.
The militant faction demolished numerous religious structures and historical sites at Palmyra, stating that they were against their beliefs. International authorities denounced the destruction as a war crime.
Numerous cultural items were also destroyed or taken from dig sites and collections.
A seasoned gaming enthusiast with over a decade of experience in reviewing online casinos and sharing winning strategies.
