The kin of late Russian dissident Alexei Navalny have been told by Kremlin investigators that his body will not be released for two weeks because they need to finish a “chemical examination” — a claim that is a “blatant lie,” his rep says.

Lyudmila Navalnaya, Navalny’s mother, was told that her 47-year-old son’s body was needed for the 14-day “examination,” according to Navalny’s spokeswoman, Kira Yarmysh — as the mom Tuesday demanded that Russian dictator Vladimir Putin immediately hand over his remains for burial.

“They are hiding Navalny’s body to cover up evidence of a murder,” Yarmysh posted on X on Monday, adding that Moscow’s claim that it needs to perform the exam is “a blatant lie and mockery.”

Yarmysh was echoing the words of Navalny’s widow, Yulia, who has accused Putin and his cohorts of poisoning her activist lawyer husband in prison — and then holding onto his body to allow all traces of the Novichok nerve agent to leave his system.

Navalny famously survived a previous attempt on his life involving the same chemical in 2020, when he he was poisoned by some of it secretly smeared in his underwear.

It isn’t clear how long traces of the deadly nerve agent can remain in someone’s system, but at least some should be able to be detected at least a couple of weeks afterward, according to Stefano Costanzi, a chemist at American University in Washington, DC, in an article at the time about Navalny’s 2020 poisoning.

What is Novichok?

• Russian opposition leader Alexei Navalny’s widow has claimed that her husband was murdered by Vladimir Putin’s regime with the nerve agent Novichok.
• Navalny was found dead after collapsing during a walk in Russia’s notorious “Polar Wolf” penal colony last week, according to prison officials.
• Novichok was developed in the Soviet Union in the 1970s and 1980s and is believed to be about five to 10 times more lethal than other poison gases like sarin or VX.
• Exposure to Novichok causes a “slowing of the heart and restriction of the airways, leading to death by asphyxiation,” Professor Gary Stephens, a pharmacology expert at the University of Reading, explained to Reuters. 
• A paramedic reportedly spotted bruises on Navalny’s head and chest when his body was brought to the morgue, according to a report.
• The Putin critic previously survived being poisoned with Novichok in 2020 when the nerve agent was applied to his underwear while he was traveling.

Meanwhile, the Kremlin balked Tuesday at allowing an independent autopsy on Navalny’s body, ABC reported.

“Moscow does not accept such demands” from the European Union, a Putin rep said in response to the request from the international group.

The Kremlin has strenuously denied having anything to do with Navalny’s unexplained death at the brutal “Polar Wolf” penal colony above the Arctic Circle on Friday — and blasted Yulia Navalnaya’s claims as “unfounded and rude.”

Navalny’s 69-year-old mother, who traveled with his lawyers over the weekend to the remote prison where he had been serving a three-decade sentence, said that for the past five days, she has been denied access to her son’s body.

“They don’t even tell me where he is,” Lyudimla Navalnaya, dressed in all black, said in the minute-long video message recorded in front of the snowed-in prison and released Tuesday.

“I appeal to you, Vladimir Putin. Resolving this issue depends on you alone. Let me finally see my son,” the grieving mom said. “I demand that Alexei’s body be released immediately so that I can bury him humanely.”

She also sent an official letter to Russia’s warmongering president with the same demand.

Navalny’s widow — who has unveiled her plan to continue her dead husband’s struggle against Putin — shared the video on her new X account, which was briefly suspended Tuesday because of what the social media company called “an error.”

“Give back Alexei’s body and let him be buried with dignity,” Yulia wrote in a post.

Navalny’s mother was told that her son succumbed to a “sudden death syndrome” — a vague term for heart-related issues causing death.