Katy Perry has criticised US President Donald Trump's response to the wildfires in California as "absolutely heartless".

Trump blamed the fires on poor forest management and threatened to withdraw federal funding from the US Forest Service.

He tweeted on Saturday (November 10): "There is no reason for these massive, deadly and costly forest fires in California except that forest management is so poor.

"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!"

At least nine people had died in raging fires in California and 150,000 people evacuated their homes at the time of Trump's tweet. The death toll his since risen to 23.

Perry responded: "This is an absolutely heartless response. There aren't even politics involved. Just good American families losing their homes as you tweet, evacuating into shelters."

The popstar earlier praised the firefighters who are working to control the blaze.

The fire is tearing through southern California and has forced celebrities including Kim Kardashian West, Will Smith, Caitlyn Jenner and Denise Richards to leave their homes, while Lady Gaga and Guillermo Del Toro have said they are worried their properties will go up in flames.

In a post in his Instagram Stories post, Will Smith said: "The smoke is really close now and for the first time I can see fire. Our house is right there. We are not in the evacuation zone but I don’t like it so we are going to go."

Caitlyn Jenner marked herself as safe amid the fires, but revealed the fate of her home is "up in the air". The TV personality shared a video to Instagram to tell fans she was safe but still does not know what has happened to her house.

Sitting alongside her friend Sophia Hutchins, she said: "Well, we're safe, at a safehouse. Don't know if the house made it or not. It's still up in the air. But we're safe and sound."

Jenner's former stepdaughter Kim Kardashian West revealed the flames had stopped near her home in the Hidden Hills, north west of Los Angeles.

The reality TV star also tweeted her thanks to the fire fighters.

Lady Gaga took to social media to say she is "thinking so deeply for everyone who is suffering today from these abominable fires". She said the fire fighters, police and emergency responders were "true heroes".