The Lebanese Shiite movement Hezbollah condemned Friday the twin suicide bombings on a mosque in Iran that left 27 people dead, dpa reported.
"We extend the deepest condolences to the leader of the Islamic revolution and to the government and people of the Islamic republic as well as to the relatives of the victims," the Iran-backed movement said in a statement.
The statement also echoed Iranian claims that foreign intelligence services were behind the attack.
Two bombs went off in the suicide attack at the mosque in Zahedan Thursday night. Authorities said an additional 167 people were injured and warned the death toll could rise.
The radical Sunni group, Jundollah, meaning Soldiers of God, claimed responsibility for the bombings, calling it retaliation for the execution last month of its leader, Abdolmalik Rigi.