WASHINGTON (AP) — President Donald Trump has revoked former Vice President Kamala Harris’ Secret Service protection that otherwise would have ended next summer, senior Trump administration officials said Friday.

Former vice presidents typically get federal government protection for six months after leaving office, while ex-presidents do so for life. But then-President Joe Biden quietly signed a directive, at Harris’ request, that had extended protection for her beyond the traditional six months, according to another person familiar with the matter. The people insisted on anonymity to discuss a matter not made public.

Trump, a Republican, defeated Harris, a Democrat, in the presidential election last year.

His move to drop Harris’ Secret Service protection comes as the former vice president, who became the Democratic nominee last summer after a chaotic series of events that led to Biden dropping out of the contest, is about to embark on a book tour for her memoir, titled “107 Days.” The tour has 15 stops, including visits abroad to London and Toronto. The book, which refers to the historically short length of her presidential campaign, will be released Sept. 23, and the tour begins the following day.

A recent threat intelligence assessment the Secret Service conducts on those it protects, such as Harris, found no red flags or credible evidence of a threat to the former vice president, said a White House official who also insisted on anonymity to discuss internal deliberations. The administration found no reason Harris’ protection should go beyond the standard six-month period for former vice presidents, the official said.

Trump’s vice president from his first term, Mike Pence, did not have extended Secret Service protection beyond the standard six months.

Still, it is not unusual for Secret Service protection to continue well beyond the statutory six-month window, particularly when former officials face credible and ongoing threats. But Trump’s decisions to revoke the protection have stood out both for timing and for targets.

During Trump’s second presidency, he repeatedly has cut off security for adversaries and figures who have fallen from favor, including his onetime national security adviser John Bolton and members of Biden’s family, including the former president’s adult children. Outgoing presidents can extend protection for those who might otherwise not be eligible; Trump did so for his family after leaving office in 2021.

The decision to strip Harris of protection is certain to raise alarms among security experts who view continuity of protection as essential in a polarized climate.

A senior Trump administration official said an executive memorandum was issued Thursday to the Department of Homeland Security ending Harris’ security detail and security services. Those had been extended from six to 18 months by the Biden administration, so they would have ended in July 2026, but now they will be terminated on Monday.

Harris lives in the Los Angeles area. The city’s Democratic mayor, Karen Bass, called Trump’s decision “another act of revenge following a long list of political retaliation” and warned that it would endanger Harris. Bass said she plans to work with California Gov. Gavin Newsom, a fellow Democrat, to ensure the former vice president’s safety, and she and Harris have already been in touch about the issue, according to a person with knowledge of the discussions.

While she lost to Trump last November, Harris is seen as a potential candidate for 2028, and she has already announced she will not run for California governor in 2026. Harris is also a former senator, California attorney general and San Francisco district attorney.

Last year was a particularly politically charged environment with Trump facing two assassination attempts, and the Secret Service played a crucial role in protecting the now-president. While questions remain about how the agency prepared for a July 2024 rally in Butler, Pennsylvania, a Secret Service counter sniper shot a gunman dead after he fired eight shots, killing an attendee, wounding two others and grazing Trump’s right ear. Trump chose one of the agents who rushed to the stage to shield him, Sean Curran, to lead the agency earlier this year.

The news of the security revocation was first reported by CNN.

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Gomez Licon reported from Fort Lauderdale, Fla.