Iran on Wednesday closed the country's western border crossing with Iraq amid mass protests rocking several Iraqi provinces against corruption and unemployment, according to an Iranian official.
The Mehran crossing was shut until further notice, Mohammad Nozari, the deputy governor of the western Ilam province, said in statements cited by the Tasnim news agency.
He said trucks will not be allowed to enter Iraq until the situation improves.
On Tuesday, the Iranian Foreign Ministry urged Shia pilgrims to postpone visits to protest-hit Iraq until further notice.
More than 80 people have been killed and more than 3,600 others injured since a second wave of protests began in several Iraqi provinces on Friday, according to human rights groups.
The first wave of protests in early October left 149 protesters and eight security personnel dead.
On Oct. 3, Iran had closed the Khosravi and Chazabeh crossings with Iraq before reopening them three days later.
Anger has been building in Iraq in recent years due to rising unemployment and rampant corruption. Many people in the country have limited access to basic services such as electricity and clean water.
According to World Bank figures, Iraq's youth unemployment is around 25%. It is also ranked the 12th most-corrupt country in the world by several transparency organizations.
* Bassel Barakat contributed to this report from Ankara