Valdosta, Georgia - The death toll from Hurricane Helene climbed to at least 130 on Monday as the disaster led to finger-pointing, with the President Joe Biden angrily rejecting claims it had been slow to respond.

With hundreds still unaccounted for across several southeastern states and the death toll climbing, Biden announced he would travel to storm-ravaged North Carolina Wednesday to monitor rescue efforts.

Biden also accused Donald Trump of spreading lies, after the Republican presidential candidate charged, without evidence, that the federal government was ignoring the disaster brought on by Helene and denying help to his supporters.

"He's lying," Biden told reporters in the Oval Office, adding that he had spoken to North Carolina governor Ray Cooper "and he told him he's lying. I don't know why he does it... that's simply not true, and it's irresponsible."

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Later on CNN, Cooper, a Democrat, said when asked about Trump's accusations of Republican victims being ignored: "It makes no difference who you are. If you need help, we are going to provide it."

"And if there is ever a time where we all need to come together and put politics aside, it is now."

At least 130 people were killed by the storm and associated flooding – 57 in North Carolina, 29 in South Carolina, 25 in Georgia, 14 in Florida, four in Tennessee, and one in Virginia, according to tallies from local authorities and media reports compiled by AFP.

Emergency workers continued a grim search for hundreds of people still unaccounted for across the affected states, where torrential rains brought widespread havoc.

They also worked to restore water and power supply to the affected areas as well as cell phone service, remove fallen trees, deliver supplies and register people for disaster assistance.

With Biden preparing to head to North Carolina, Trump on Monday visited Georgia, another epicenter of the destruction.

In the city of Valdosta, Trump vowed to "bring lots of relief material, including fuel, equipment, water, and other things" to those in need.

"The federal government is not being responsive," he told reporters. "The vice president, she's out someplace, campaigning, looking for money," he said, referring to his election rival, Vice President Kamala Harris.

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"We're not talking about politics now," he said later, wearing a bright red Make America Great Again hat while standing in the rubble of a furniture store.

Harris canceled campaign events to return to Washington Monday for a briefing on the federal response.

"Over the past few days, our nation has endured some of the worst destruction and devastation that we have seen in quite some time," Harris said afterward.

"And we have responded with our best, with the best folks who are on the ground and here doing the kind of work that is about rising to a moment of crisis."

Responding to Trump's criticism that he was "sleeping" instead of dealing with the storm damage, Biden defended his decision to spend the weekend at his home in Delaware, saying he was working "the whole time."

When a major natural disaster hits the US, the federal government responds at the request of states. A president's role is usually to oversee and coordinate aid, including funding.

Scientists say climate change likely plays a major role in the rapid intensification of hurricanes, because there is more energy in warmer oceans for them to feed on, and Biden stressed as much Monday.

"Absolutely, positively, unequivocally, yes, yes, yes, yes," Biden told reporters in the Oval Office when asked if climate change was to blame for the trail of destruction left by the storm.

The sheriff's office in Pinellas County, Florida published a grim litany of the nine people left dead there so far, almost all of whom were found in their homes.

Nearly all appeared to have drowned, it said, while the others were buried under debris.

In Georgia, residents faced power cuts, supply shortages, blocked roads and broken communication lines in often mountainous terrain, with Governor Brian Kemp describing the storm as a "250-mile wide tornado."

More than 1.6 million households and businesses remained without power on Monday, according to tracker poweroutage.us.