Iranian parliamentarians are preparing a bill that could push Tehran toward exiting the nuclear Non-Proliferation Treaty, the foreign ministry said on Monday, while reiterating Tehran's official stance against developing nuclear weapons.

Dubai (Reuters) -Iranian foreign ministry spokesperson Esmaeil Baghaei said on Monday that the Iranian parliament is preparing a bill to leave the nuclear Non-Proliferation Treaty (NPT), adding that Tehran remains opposed to developing of weapons of mass destruction.

Iran has threatened to withdraw from the nuclear Non-Proliferation Treaty (NPT) amid escalating tensions with Israel, accusing Tel Aviv of US-backed strikes on nuclear sites and calling nuclear talks meaningless under current war conditions.

Iran fired a new wave of missile attacks on Israel early Monday, triggering air raid sirens across the country as emergency services reported at least five killed and dozens more wounded in the fourth day of a conflict between the regional foes that showed no sign of slowing.

Israel hit more targets in Tehran and Iranian missiles fired at Israel killed at least 10, as the conflict entered a third day