Iranian supreme leader Ayatollah Ali Khamenei said on Monday that the attackers who killed 25 people at a military parade were paid by Saudi Arabia and the United Arab Emirates, and that Iran would "severely punish" those behind the bloodshed.

Iran warns US, Israel of revenge after parade attack

Iran summoned diplomats from Denmark, the Netherlands and Britain over an attack on an army parade which killed at least 29 people near the Iraqi border, state-run media said on Sunday.

Iran summons 3 European diplomats over parade attack: Report

Gunmen fired on a military parade in southwestern Iran on Saturday (September 22), killing 25 people, almost half of them members of the Revolutionary Guards, state news agencies reported, in one of the worst attacks ever on the elite force.

Iran parade gunmen wore 'fake military clothing', fired on women and children: Eyewitness

Islamic State group has claimed the responsibility of Iran army parade attack which claimed the lives of 29 people on Saturday. Citing a security source, Islamic State's propaganda agency Amaq said: "Islamic State fighters attacked a gathering of Iranian forces in the city of Ahvaz in southern Iran".

Islamic State group claims responsibility for Iran parade attack

Gunmen fired on a military parade in southwestern Iran on Saturday, killing 25 people, half of them members of the Revolutionary Guards, state news agencies reported, in one of the worst attacks ever on the elite force.

Gunmen kill 25, including 12 Revolutionary Guards, in attack on Iran military parade