Gen. Qassim Suleimani and other Iranians to adapt Syria's low-tech rockets into precision-guided missiles that have the capability to pinpoint cities hundreds of miles away - a project Israel has long tried to squelch.
An Israeli official declined to comment on reports of Asber's death when asked by the Reuters news agency.
A Syrian scientist connected to the Assad regime's chemical weapons program was killed in a vehicle bombing in the city of Masyaf, with foreign media attributing the assassination to Israel's Mossad spy agency.
The deceased was known for close ties with Syrian President Bashar al-Assad as well as the Iranian regime and according to British-based Syrian Observatory for Human Rights, the unit was being used chemical weapons development. About it reports The Guardian with reference to the Syrian government newspaper al-Watan.
Iran had also alleged Israeli involvement in assassinating four nuclear scientists: Masoud Alimohammadi, Majid Shehriari, Rezaeinejad and Mustafa Ahmadi roshan, between 2010 and 2012.
Syrian press reports blamed Israel's Mossad intelligence agency for the killing and said Asbar had survived two previous assassination attempts, also by Israeli agents. He claimed that it was the fourth time in three years the Mossad has assassinated an enemy weapons engineer in a foreign country. He led a top-secret weapons-development unit called Sector 4 and was hard at work building and underground weapons factory to replace one destroyed by Israel a year ago.
Israel has carried out numerous strikes inside Syria since 2017, targeting government forces and their allies from Iran and Lebanese Shiite militant group Hezbollah.
An Israeli air strike targeted the research center July 22, Syrian state media and the Observatory reported.