After a weekend of massive strikes and counter-strikes between Tel Aviv and Tehran, the UN's human rights chief, Volker Türk on Monday condemned the violence and echoed wider calls for a negotiated end to the attacks.

Israel identified and struck missile launchers in Iran overnight, the Israel Defense Forces said Sunday morning. "Over the past hour, the IAF completed an additional series of strikes on storage and missile launch infrastructure sties in western Iran," the IDF said in an update on the Telegram messaging app at about 8 a.m. in Israel.

Iran launched a wave of missiles just hours after Israel said it was striking missile sites in central Iran. Israel says it hit Quds Force command centers.

Iranian state media report more explosions, with blasts heard in Tehran, as Israel says its air force is hitting military targets.