Washington- The United States State Department has added an Iraqi and Syrian ISIS members to its terrorist blacklist.

The US terror designation forbids Americans from conducting business with them and any assets they are found to possess in areas under US jurisdiction will be seized.

Syrian Ahmad Alkhald is an ISIS bombmaker, the Department said.

Alkhald provided suicide vests and explosives expertise before the November 13, 2015 attacks on a Paris concert, bars and football crowd that left 130 dead.

He is thought to have fled to Syria, but remained in contact with a gang that later carried out the March 22, 2016 bombings at Brussels airport and a metro station that killed 32 people.

In the same announcement, the State Department blacklisted Abu Yahya al-Iraqi — also known as Iyad Hamed Mahl al-Jumaily — whom it said was a senior lieutenant of ISIS leader Abu Bakr al-Baghdadi.