Iran is building a new tunnel at a military base in eastern Syria near the border with Iraq capable of storing advanced weapons systems, according to satellite images and analysis obtained by Fox News.
Images captured earlier this week show bulldozers at the entrance of the structure that is estimated to be around 15 feet wide, it said.
Satellite shots from April 1 show an excavator and bulldozers near where the new construction took place.
Intelligence analysis conducted by Image Sat International (ISI), a civilian satellite company, indicates the tunnel is fit to be used for the storage of vehicles carrying advanced weapons systems, said Fox News.
This conclusion was drawn from looking at similar tunnels that were dug over the past nine months on the same complex. One such tunnel, two miles away, was hit in an airstrike in March, forcing the Iranians to abruptly stop construction.
Hezbollah leader Hassan Nasrallah said on Wednesday that Israel is now concentrating its attacks in Syria on missile-manufacturing sites.
Israel has conducted many raids inside Syria since 2011. It sees the presence of Hezbollah and its ally Iran there as a strategic threat.
Nasrallah denied that Israeli airstrikes have pushed either Hezbollah or Iran to retreat from Syria.
Last week, Israel's outgoing defense minister, Naftali Bennett, pledged to keep up operations until Iran leaves Syria.
