According to Israeli firm ImageSat International, the tunnel could serve as secure storage for advanced weapons or other sensitive material.
Iran is building an underground tunnel in eastern Syria that could be used to store missiles and other large-scale weapons, Fox News reported on Tuesday.
The structure, at the Imam Ali military base near the Iraqi border, is estimated to be around 400 feet long, 15 feet wide and 13 feet deep, and is in its final stages of construction.
According to ImageSat International (ISI), the tunnels are suitable for trucks and large vehicles, and could serve as secure storage for advanced weapons or other sensitive material.
Separately, Iran announced on Wednesday that it had foiled a “very big” cyber attack on its infrastructure by a foreign government, reported Reuters.
“We recently faced a highly organized and state-sponsored attack on our e-government infrastructure which was … repelled by the country’s security shield,” said Iranian Minister of Information and Communications Technology Mohammad Javad Azari-Jahromi, according to the report.
U.S. officials told Reuters in October that the United States had carried out a cyber attack against Iran following the Islamic Republic’s Sept. 14 attack on key Saudi oil facilities.