The Iranian Red Crescent reports 787 killed and 153 cities struck in over 1,000 attacks since the US-Israel strikes began, with new explosions reported in Tehran.

The organisation stated the figure was based on field reports from its operational teams, The Caspian Post reports, citing foreign media.

It said strikes since Saturday had hit 153 cities and more than 500 locations across Iran in more than 1,000 separate attacks.

Separately on Tuesday, loud explosions were heard in Tehran according to AFP journalists.

Iranian media also reported blasts in Karaj, west of the capital, and in the central city of Isfahan.