A suicide bomber killed 27 members of Iran's elite Revolutionary Guards on Wednesday, state media said, in a southeastern region where security forces are facing a rise in attacks by militants from the country's Sunni Muslim minority.
The Sunni group Jaish al Adl (Army of Justice), which says it seeks greater rights and better living conditions for the ethnic minority Baluchis, claimed responsibility for the attack, the semi-official Fars news agency reported.
A suicide bomber driving a vehicle laden with explosives attacked a bus transporting members of the Guards, the force said in a statement. Thirteen other people were wounded.
A video posted by Fars showed blood and debris at the site of the attack on a road in a volatile area near the Pakistan border where militants and armed drug smugglers operate.
The bus was turned into a twisted pile of metal, Reuters reported, citing a photo published on Fars.
A senior Revolutionary Guards commander issued a warning to the country's foes after the heavy losses among Iran's premier military force.
Our response in defense of the Islamic Revolution will not be limited to our borders, Ali Fadavi was quoted as saying by Fars.
The enemies will receive a very firm response from the Revolutionary Guards like before, he said, but without specifying which enemies or what actions Tehran would take.
(CGTN)