President Donald Trump is using a deadly train derailment in Washington state to call for a boost to infrastructure spending.

In a tweet sent about three hours after the crash that authorities said killed at least six Monday, Trump says it shows "more than ever why our soon to be submitted infrastructure plan must be approved quickly."

Trump adds: "Seven trillion dollars spent in the Middle East while our roads, bridges, tunnels, railways (and more) crumble! Not for long!"

Trump is expected to release a framework for increased infrastructure spending in January, relying on a mix of federal, local and private spending.

Trump later is offered "thoughts and prayers" for those involved in the train derailment.

Trump thanked the first responders at the scene and says the White House is monitoring the situation.