Alexei Navalny has been buried at a cemetery on the outskirts of Moscow
Large crowds of his supporters, risking arrest, chanted "Russia without Putin" and "Russia will be free"
There's a heavy police presence in the area - a human rights group says more than 45 people have been detained across the country
Navalny's parents attended the funeral but his wife Yulia decided not to travel to Russia amid concerns about repression from the Kremlin
In a post on social media, she thanked her husband for "26 years of absolute happiness" and said they would meet again one day
The Russian opposition leader died in an Arctic prison, where he had been held on politically-motivated charges
Few details have been released on the cause of his death - officials say he collapsed after going for a walk. His wife alleges he was killed on the orders of Vladimir Putin
Alexei Navalny's body has now been handed over to his relatives.
The hearse carrying the body will leave the mortuary for the church any minute now, his ally Ivan Zhdanov said on Telegram.
The journey should take about an hour.
Alexei Navalny is due to be buried at Borisovskoye Cemetery, on the banks of the Moskva river in Moscow.
His burial will follow a service at the the Church of the Icon of Our Lady Quench My Sorrow in the district of Maryino, where Navalny used to live.
Image source, .
Image source, ReutersNavalny's former chief of staff says there are already "many hundreds" of people waiting outside the church where the former Russian opposition leader's funeral is due to take place later on.
Leonid Volkov tells the BBC World Service that "a lot" of police are also gathered - "like, as if we were going to start a revolution".
"Our aim is to have a peaceful farewell and mourning, but it looks like Russian authorities consider [today to be] riot or something," Volkov adds.
Kira Yarmish, Alexei Navalny's spokeswoman, has just said that Navalny's relatives arrived at the mortuary at 10:00 local time (07:00 GMT) when his body was meant to be handed over, but that they've not been given it yet.
"The timetable for today has not changed, but there might be delays," she says.
Steve Rosenberg
BBC Russia editor
Image source, ReutersPensioner Anna is queuing up outside the church.
She tells me this about Alexei Navalny: “He was our hope. He was the same age as my children. I feel like I’m burying my own son.”
Then a young woman, Alyona, tells me why she has come to pay her respects to Navalny.
“He was the only person I could trust. I was dreaming that he would become president. It’s a huge tragedy for me and for Russia.”
Steve Rosenberg
BBC Russia editor, reporting from Moscow
At the Church of the Icon of Our Lady Quench My Sorrow, five grey onion domes rise into the overcast Moscow sky.
This is where the funeral service for Alexei Navalny will take place this afternoon.
There’s a heavy police presence: masked officers stand on guard around the perimeter fence.
People, young and old, are queuing outside with flowers, hoping to be allowed in to pay respects to the late opposition leader.
The mood is sombre, but the situation, for now, calm.
Emily Atkinson
Live reporter
Image source, ReutersPeople are beginning to gather outside the Church of the Icon of Our Lady Quench My Sorrow, in Maryino, where the funeral of Alexei Navalny is due to take place later today.
Navalny died on 16 February in a Russian prison inside the Arctic Circle. He had been serving a lengthy sentence on politically-motivated charges.
With just two hours to go, his team says they continue to face difficulties in organising the farewell ceremony.
His spokeswoman Kira Yarmysh says they have been unable to find a hearse to drive the body to church.
The farewell ceremony is due to take place in the morning, followed by the funeral service at 14:00 (11:00 GMT) and the burial at 16:00 (13:00 GMT).
Stay with us as we bring you the latest from Moscow.