0739 GMT January 20, 2019
In the letter, addressed to President Hassan Rouhani, Akhoundi announced his resignation and asked the president to accept his decision.
President Rouhani has yet to agree with the resignation, IRNA reported.
Rouhani’s administration plans to introduce its candidates for two other vacant ministries to Parliament on Sunday.
The Parliament has impeached Akhoundi twice. The main reason behind his first impeachment was what the MPs called weak performance that led to the tragic train crash in November 2016, killing 45 passengers and wounding dozens of others.
His second impeachment occurred after an Iranian airliner, flying from Tehran to Yasouj, crashed in February 2018.