Although official reports had earlier put the death toll in Ahvaz at eight, Yunessi now says seven people were killed and 40 injured by the blasts in the capital of Khuzestan Province.
Yunessi says no progress has been made in the investigation of two explosions in Tehran late yesterday that killed two people.
Earlier today, Iran's top prosecutor called the bombers "enemies of God" and said he would seek the death penalty in the case.
The bombings came just days ahead of Iran's presidential elections, which are scheduled for 17 June.
Bombings May Be Connected With Minorities, Election
Iranian Authorities Look Into Bomb Blasts