Ten people have been killed and at least 20 wounded in a bomb attack on a military parade in north-western Iran.
No soldiers died, but most of the casualties in the town of Mahabad were said to be women and children.
A provincial governor blamed "counter-revolutionaries" for the attack, which came on the 30th anniversary of the start of the Iran-Iraq war.
Militants have long been active in the area, which is home to a sizeable Kurdish population.
There have been reports of Kurdish political activists being arrested, tried and executed in recent months.
Kurdish separatists based in northern Iraq have also waged a long guerrilla campaign inside Turkey and have regularly clashed with Iranian security forces.
Speaking in the aftermath of the parade bombing, Vahid Jalalzadeh, the governor of West Azerbaijan province, said the attack was the work of "counter-revolutionary groups".
The bomb was connected to a timer and hidden near a tree along the parade route, state media said.
BBC News
