A helicopter carrying ballot boxes crashed near Dezful city in the southwestern Iranian province of Khuzestan on Saturday, official IRNA news agency reported.

One onboard was killed, and 11 others were injured, Qassem Soleimani Dashtaki, governor of Khuzestan province, told IRNA.

All the injured were taken to hospital, but some of them are in critical condition, Soleimani Dashtaki was quoted as saying.

Iranians cast their votes for presidential and city council elections on Friday.