TEHRAN, Iran (AP) —

Iran has summoned diplomats from Britain, Denmark and the Netherlands over allegedly harboring "members of the terrorist group" that launched an attack on a military parade in the country's southwest.

A statement early Sunday from Iran's Foreign Ministry also quoted ministry spokesman Bahram Ghassemi as saying Danish and Dutch diplomats were told Iran "already warned" their governments about this.

The statement also criticized Britain over a Saudi-linked, Farsi-language satellite channel immediately airing an interview with an Ahvazi separatist claiming the attack.

Saturday's attack in Ahvaz killed at least 25 people and wounded over 60.

Arab separatists in the region claimed the assault and Iranian officials believe they carried it out.

The Islamic State group also claimed the attack, but initially offered incorrect information about it and provided no proof.