The Notre Dame Cathedral in Paris following a fire that destroyed much of the building on Monday. Photo: Gareth Fuller/PA Images via Getty Images

Investigations have begun into the cause of the devastating fire at Notre Dame, which toppled the Paris cathedral's spire and caused the roof to collapse.

Details: Paris firefighters spokesperson Gabriel Plus confirmed the blaze was extinguished. "Now we're in the phase of investigating," he told reporters Tuesday morning. Junior Interior Minister Laurent Nuñez said pockets of fire continued to burn inside the building. Authorities were concerned for the structure's soundness and would conduct checks.

In pictures: Firefighters released video Tuesday morning of the battle to save the Paris icon — which involved 400 personnel.

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Trump's new TikTok threat

Photo illustration: Aïda Amer/Axios. Photo: Jim Watson/AFP via Getty Images

President Trump said twice Monday that the U.S. Treasury would need to get a portion of the sale price of TikTok, as a condition of regulatory approval.

Why it matters: This is akin to extortion — the sort of thing you'd expect to hear on a wiretap, not from the White House in front of reporters.

Ford names James Farley as new CEO amid ongoing turnaround effort

James Hackett, left, is retiring as Ford CEO. Jim Farley, right, takes over Oct. 1. Photo: Ford

Ford announced Tuesday that James Farley will take over as its next CEO, replacing James Hackett, 65, who is retiring after three years in the job.

Why it matters: It leaves Farley to complete the company's ongoing turnaround effort. The transition will be that much harder as the industry tries to navigate the coronavirus-induced economic slowdown which shuttered Ford plants for two months on the eve of some of its most important vehicle launches.

Updated 3 hours ago - Politics & Policy

Watch the full "Axios on HBO" interview with President Trump

In this episode of “Axios on HBO”, President Trump discusses his handling of the coronavirus pandemic, the upcoming election and much more with National Political Correspondent Jonathan Swan.

The interview was filmed on Tuesday, July 28 and aired Monday, Aug. 3 on HBO.