November 5, 2015 6:32 PM EST

President Barack Obama said Thursday there is a “possibility” there was a bomb onboard the Russian airliner that crashed in Egypt on Saturday, killing all 224 people on the flight.

“I don’t think we know yet,” said Obama when asked about the cause of the accident, which ISIS has claimed responsibility for, during a Thursday interview with Seattle radio host Dave Ross. “Whenever you got a plane crash, first of all you got the tragedy, you got making sure there’s an investigation on site,” Obama said . “I think there is a possibility there was a bomb onboard. And we are taking that very seriously.”

Obama said the U.S. would “spend a lot of time making sure our own investigators and our own intelligence community knows exactly what’s going on before making any definitive pronouncements.” The President spoke during a round of local interviews from the White House on Thursday. White House Press Secretary Josh Earnest also reiterated that the investigations from last weekend’s crash are not yet complete and therefore a concrete determination cannot be made. Russian officials are not drawing any conclusions ahead of the investigation.

[MyNorthwest]

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