Russia restricts foreign mourners

Several EU politicians and Russia's opposition leader have been barred from attending the funeral of murdered Russian politician Boris Nemtsov.

A Polish politician was denied a visa under existing Russian sanctions while a Latvian MEP was turned back after arriving at a Moscow airport.

Opposition leader Alexei Navalny was denied permission to leave jail, where he is serving a 15-day sentence.

Mourners are filing past Nemtsov's coffin at Moscow's Sakharov centre.

His funeral will be held in the afternoon (local time) at a Moscow cemetery, Troyekurovskoye, where murdered journalist Anna Politkovskayta was buried in 2006.

Nemtsov, a fierce critic of President Vladimir Putin, was killed on a bridge near the Kremlin wall on Friday night.

No arrests have been made and no clear motive has been established for the crime.

New CCTV footage of the presumed getaway car has been released by a pro-Kremlin Russian news website, LifeNews. The video shows a vehicle making its way along Moscow streets but there is no close-up on the suspects inside.

Former UK Prime Minister John Major, who was in Moscow to pay his respects, called for a full, transparent investigation into Nemtsov's murder, saying his voice would not be silenced.

It was, he added, his "saddest ever visit to Moscow".

Latvian MEP Sandra Kalniete told the BBC she had been refused entry into Russia at Sheremetyevo airport in Moscow without a proper explanation.

Dina Eidman (left), mother of Boris Nemtsov, stood with other relatives over the coffin in Moscow

A mourner clasped a book with Boris Nemtsov's photo on the cover while waiting to visit his coffin in Moscow

Former UK Prime Minister John Major said it was his saddest visit to Moscow

Ms Kalniete said she had been made to wait two hours at the airport before being denied entry.

"I was not coming to Russia to make political declarations and standing on the corner to offend the people," she said.

"I was going to Russia to pay tribute to Boris Nemtsov, who I consider one of the brightest and most admirable political personalities in Russia.

"What I endured during these last hours is nothing in comparison [to] what they endure day from day, fighting for Russia's future and for Russia's freedom."

Bogdan Borusewicz, the Polish senate speaker who was to have led a delegation from his country, was denied a visa.

Russia said he was on a list of Polish officials barred from travelling to Russia, drawn up after the EU imposed sanctions on Russia over its involvement in Ukraine.