At least 85 girls killed in strike on school in southern Iran

"The destroyed building is a primary school for girls in the south of Iran. It was bombed in broad daylight, when packed with young pupils," he wrote.

"Dozens of innocent children have been murdered at this site alone."

US and Israeli strikes on Iran have also heavily targeted Tehran. Explosions echoed across the capital as Iranians set out for work on the first day of the week, before quickly spreading across the country.