Tatarsky was slain on Sunday when a lady handed him a figurine that later exploded in a cafe, hurting more than 40 people.
Vladlen Tatarsky, a well-known Russian military blogger, was killed in a bombing in Saint Petersburg, and hundreds of people attended his funeral in Moscow.
Tatarsky, whose real name was Maxim Fomin, died on Sunday when a lady gave him a bust that went off and injured more than 40 people in a cafe.
According to Russian authorities, Alexey Navalny's supporters who are in prison helped Ukraine plan the attack. Kyiv has attributed it to internal strife in Russia.
At the exclusive Troyekurovskoye cemetery in western Moscow, there was a large gathering of mourners, some carrying flowers.
Some supporters put the letters Z and V on their clothing as a representation of Moscow's attack on Ukraine. Priests in white robes presided over a funeral service at the cemetery while carrying lit candles.
Near his casket, velvet cushions held Tatarsky's awards.
Reporting from the funeral in the capital for Al Jazeera, Dorsa Jabbari claimed the occasion was heavily guarded.
We had to wait quite a while to enter the cemetery's grounds, and we are still not permitted to enter because of security reasons, she claimed.
At the entry, metal detectors have been installed, and we underwent a rigorous security inspection.
According to Jabbari, mercenary Wagner Group founder Yevgeny Prigozhin attended the funeral as well.
"When he paid his respects, he placed what we think to be an axe of some sort on top of the coffin. Before the throng was allowed in, he was the first to act in such a way.
The owner of the cafe where Tatarsky was murdered was Prigozhin.
Prigozhin, whose soldiers are directing the attack on towns in eastern Ukraine, commended the blogger for helping "destroy the enemy" in a statement distributed by his spokespeople.
According to Prigozhin, "He is a soldier who stays with us, whose voice will always live and speak only the truth."
Darya Trepova, a 26-year-old inhabitant of St. Petersburg, has been accused by Russian authorities of "terrorist offenses" in connection with the blast.
While Trepova was detained in St Petersburg, her case was forwarded to Moscow where the country's top investigative agencies are situated - an obvious reflection of its high priority.
‘We will defeat everyone’
Tatarsky, a fervent backer of Moscow's invasion of Ukraine, was given the highest Order of Courage earlier this week by Russian President Vladimir Putin.
On the messaging app Telegram, he had more than 500,000 followers and actively urged Russia to escalate the conflict.
After a Moscow-backed uprising broke out in eastern Ukraine in 2014, Tatarsky joined rebels there and battled on the front lines for several years before switching to blogging.
Tatarsky videotaped himself saying: "We will defeat everyone" during a Kremlin ceremony in September declaring the annexation of four areas of Ukraine. We'll all be killed. Everybody will be robbed as necessary. Just how we prefer it.
On Wednesday, Putin claimed that Western security agencies had assisted Kyiv in staging "terror attacks" in Russia.
After Darya Dugina, the daughter of a well-known ultranationalist scholar, was killed in a vehicle bombing outside of Moscow last year, which Russia also blamed on Ukraine, the assault on Tatarsky occurred.