Breaking:
Russian TASS news agency reporting that Russia's Investigative Committee is offering 3 million rubles for useful information about Nemtsov's murder.
Many of those mourning Nemtsov have blamed his death on Russian propaganda, led by Russian TV, which has relentlessly portrayed the opposition as a Western-backed fifth column out to weaken the country.
Massive crowds still trying to get through metal detectors. AFP estimates more than 10,000 people so far.
The scene inside the Metro. Russian journalist Roman Dobrokhotov, says it wasn't even like this three years ago, during large antigovernment protests.
Meanwhile, in another world.