Iranian government spokeswoman Fatemeh Mohajerani said Friday that 390 residential units, 528 commercial centres and 13 medical sites had been struck since the start of the US-Israeli bombing campaign last week, Mehr news agency reported.

Iranian media aired videos said to show residential areas in the western city of Ilam and the capital Tehran that had been hit. AFP could not independently verify the footage.

Israeli military spokesman Lieutenant Colonel Nadav Shoshani insisted the army was "only targeting military targets, according to international law".

Photographs taken by AFP on Friday in Tehran showed a buliding at the city's Azadi Sport Complex heavily damaged after a strike.

Shoshani said he had no information to share on the incident.