The dead and wounded were both military personnel and civilians including a journalist who were watching the parade, IRNA added.
“Terrorists began shooting from a long distance while inside the park, at the armed forces as well as civilians watching the parade,” Brigadier General Abolfazl Shekarch, a spokesman for the Iranian armed forces told MEHR, another Iranian news agency.
Three of the attackers were gunned down during clashes with the security forces and one other arrested, news agencies reported.
“The terrorists disguised as Islamic Revolution Guards Corps (IRGC) and Basiji (volunteer) forces opened fire to the authority and people from behind the stand during the parade,” Governor of Khuzestan Gholam-Reza Shariati said, according to IRNA.
IRGC spokesman Ramezan Sharif said the attackers were affiliated with a terrorist group supported by Saudi Arabia, Press TV said. “The individuals who fired at the people and the armed forces during the parade are connected to the al-Ahvaziya group which is fed by Saudi Arabia,” Sharif said. Saudi Arabia has yet to respond to the allegations.