TEHRAN -- A fourth cuneiform brick inscription has been discovered at Rabat Tepe 2 in northwestern Iran, the Persian service of CHN reported on Tuesday.

“The brick is 9 centimeters thick and measures 33x33 centimeters, and the cuneiform script has been written with white glaze,” the director of the team of archaeologists working at Rabat Tepe 2 said.

“Up to now, inscriptions with white glaze had only been discovered at the famous Gate of Babylon,” Reza Heidari added.

A team of archaeologists is deciphering the latest find and three other brick inscriptions that have been discovered during the second season of excavations at the 3000-year-old site, which began in late October.

Ancient inscriptions previously discovered in the region have been written on cliffs or on steles, but these are the first brick inscriptions to be discovered in the area, which is located near the town of Sardasht in Iran's West Azarbaijan Province.

“We will certainly find more brick inscriptions as excavations are continuing at the site, and these findings will provide much information for those who are interested in researching the history of the region,” Heidari noted.

The team aims to prove that Rabat Tepe was the capital of the Musasir state about 3000 years ago during this season of excavations.

Musasir was a semi-independent buffer state bordering Mannai between Assyria and Urartu. It was a vassal state of Assyria yet Urartu had some claim over it.