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LOS ANGELES (AP) — President Donald Trump is threatening to withhold federal payments to California, claiming its forest management is "so poor."

Trump says Saturday via Twiitter that "there is no reason for these massive, deadly and costly fires in California." Trump says "billions of dollars are given each year, with so many lives lost, all because of gross mismanagement of the forests. Remedy now, or no more Fed payments!"

The comments were Trump's first about massive wildfires, including a blaze that incinerated most of the Northern California town of Paradise and killed at least nine people.

RELATED: "California Wildfires: The New Normal" is ABC10's new 9-part series on how wildfires are changing lives across Northern California

Wildfires also raged in Southern California, including the town of Thousand Oaks, where a gunman days earlier killed a dozen people at a local bar.

Trump earlier issued an emergency declaration providing federal funds to help firefighters.