Biden administration officials still fear Iran could blame the US or Israel for the helicopter crash that killed Iranian President Ebrahim Raisi, sources say, reports Politico.

According to them, the US is closely watching how Iran reacts to the sudden death of its president, expecting the regional status quo to hold while still wary that one allegation could escalate tensions with Israel.

For now, senior US officials expect few—if any—changes in the way of Iran’s policies before the Islamist-led country elects a new president following the weekend helicopter crash that killed Ebrahim Raisi and Foreign Minister Hossein Amir-Abdollahian.

US officials spent Sunday anxiously awaiting updates from the search for the missing helicopter and wondered for hours how the crash could alter the dynamics of the Middle East.

“For a little while, it was not a crazy question to ask ‘Is this how World War III begins?’” said one of the officials.