Russian mercenary chief Yevgeny Prigozhin has been buried privately at a cemetery on the outskirts of St Petersburg, six days after his death in an unexplained plane crash.

The funeral happened away from the glare of the media and in stark contrast to the brazen, self-publicising style with which Mr Prigozhin had fanned his reputation far beyond Russia for ruthlessness and ambition.

“The farewell to Yevgeny Viktorovich took place in a closed format.

Those who wish to say goodbye may visit Porokhovskoye cemetery,” his press service said in a short post on Telegram.

Pictures published on social media showed Mr Prigozhin’s dark granite tombstone surrounded by a sea of flowers, mostly red roses, in the cemetery on the north-east edge of his hometown.

Secrecy had surrounded the funeral arrangements for the Wagner mercenary boss who was killed in a plane crash on August 23, two months to the day since staging a mutiny in the biggest challenge to President Vladimir Putin’s rule since he rose to power in 1999.

It meant the event could not be turned into a large-scale public show of support for Mr Prigozhin. He was a brutal figure who was nevertheless admired by some in Russia for throwing his fighters into the fiercest battles of the war in Ukraine and speaking openly about the shortcomings of the Russian military and its leadership.

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In recent days, admirers had heaped flowers on makeshift shrines to Mr Prigozhin in Moscow, St Petersburg and elsewhere.

The Kremlin has rejected as an “absolute lie” the suggestion that Mr Putin ordered his death in revenge for the June mutiny.

It said earlier on Tuesday (local time) that the president would not attend the funeral.

Two other top Wagner figures, four Prigozhin bodyguards and three crew members were also killed when his Embraer Legacy 600 private jet crashed north of Moscow.

It is still unclear what caused the plane to crash but villagers near the scene told Reuters they heard a bang and then saw the jet plummet to the ground.

After months of insulting Mr Putin’s top brass with crude expletives and prison slang over their perceived failure to fight the Ukraine war properly, Mr Prigozhin took control of the southern Russian city of Rostov in late June.

He then marched towards Moscow before turning back 200 kilometres from the capital.

Mr Putin initially cast Mr Prigozhin as a traitor whose mutiny could have tipped Russia into civil war, although he later did a deal with him to defuse the crisis.

The day after the crash, Mr Putin sent his condolences to the families of those killed and said he had known Mr Prigozhin for a very long time, since the chaotic years of the early 1990s.

“He was a man with a difficult fate, and he made serious mistakes in life,” Mr Putin said, while describing him as a talented businessman.

Before the mutiny, Mr Prigozhin had quipped that his nickname should have been “Putin’s butcher” rather than “Putin’s chef” – a moniker acquired after his catering company won Kremlin contracts.

He always professed loyalty to Mr Putin, although he said Russia’s defence minister, Sergei Shoigu, was so incompetent he should executed for his treachery.

After Mr Prigozhin’s death, Mr Putin ordered Wagner fighters to sign an oath of allegiance to the Russian state – a step that Mr Prigozhin had opposed due to his anger at the defence ministry that he said risked losing the Ukraine war.

Investigators said on Sunday that genetic tests had confirmed the identities of all 10 people killed in the crash. They also included two pilots and a flight attendant.

Earlier on Tuesday, Valery Chekalov, the head of Wagner logistics, was buried at another St Petersburg cemetery.