Robert F. Kennedy, Jr.'s family denounced him for "betraying" their family values after the former presidential candidate gave his full-throated support Friday to former President Trump. 

"We want an America filled with hope and bound together by a shared vision of a brighter future, a future defined by individual freedom, economic promise and national pride," a statement signed by five of the former third-party presidential candidate's siblings said.

"We believe in Harris and Walz," the statement continued. "Our brother Bobby's decision to endorse Trump [Friday] is a betrayal of the values that our father and our family hold most dear. It is a sad ending to a sad story."

The statement, signed by Kathleen Kennedy Townsend, Courtney Kennedy, Kerry Kennedy, Chris Kennedy and Rory Kennedy, was shared by Joe Kennedy III, a grandson of Robert F. Kennedy, who wrote that it was "well said."

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Jack Schlossberg, RFK Jr.'s cousin, wrote that his relative was "for sale" and now "works" for Trump.

"Never been less surprised in my life. Been saying it for over a year — RFK Jr. is for sale, works for Trump. Bedfellows and loving it," Schlossberg wrote in an X post. "Kamala Harris is for the people — the easiest decision of all time just got easier."

Schlossberg, the son of Caroline Kennedy and the grandson of JFK, has been a vocal critic of his cousin's campaign. 

When RFK Jr. first announced his candidacy, Schlossberg called him an "embarrassment."

The 31-year-old has been an ardent supporter of Harris and recently spoke at the Democratic National Convention.

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The Independent presidential candidate on Friday dropped his White House bid and announced support for Trump.

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"I've made the heart-wrenching decision to suspend my campaign and to support President Trump. This decision is agonizing for me because of the difficulties it causes me and my children and my friends," he said during an event in Phoenix, Arizona. 

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Hours later, Kennedy joined Trump onstage at an Arizona rally, where the crowd burst into resounding "Bobby!" chants.

"Three causes drove me to enter this race in the first place. And these are the principal causes that persuaded me to leave the Democratic Party and run as an independent and now to throw my support at President Trump," RFK Jr. said. "The causes were free speech, war in Ukraine and the war on our children." 

RFK Jr. said the Democratic National Committee "waged continued legal war" on both Trump and him, while also accusing the DNC of running a "sham primary" that prevented a serious primary challenge to President Biden before he secured the Democratic nomination and dropped out in July and endorsed Harris.

Fox News Digital's Brie Stimson contributed to this report.

An investigation is underway after two Arizona women were found shot to death in an overturned vehicle on a dangerous stretch of highway in northern Mexico.

The women, identified only by their last names and ages, were 72 and 82, the attorney general’s office for the state of Sonora said in a release on social media Friday. 

The victims, originally from Caborca, Mexico, which is further southeast, were dual citizens of the U.S. and Mexico. 

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The attorney general’s office said investigators with the Mexican National Guard and the army had found a stolen Ford F-150 and an AK-47 and ammunition believed to be linked to the murders. 

"Security forces from three levels of government immediately initiated an operation to locate and arrest the criminal group responsible, with the support of specialized air and ground forces," Sonora state prosecutors said.

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Sonora and the Sonoyta-Caborca highway are known for violence and trafficking of migrants. 

In June 2023, a California student doing horticulture research in Sonora was found shot seven times in an SUV. In December, two U.S. residents and one U.S. citizen were shot at by gunmen while traveling a highway in Sonora. One of the men was killed, according to the Arizona Daily Star. 

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The state was once controlled by infamous drug lord Joaquin "El Chapo" Guzman, who was arrested in 2016 and is serving a life sentence in Colorado, and three cartels continue to war in Sonora. 

The U.S. State Department did not immediately respond to Fox News Digital’s request for comment.