Hate crime: brutal murder caught on CCTV
A security guard monitoring the cameras slept through the incident, but raised the alarm when he saw the deceased’s body on his TV screen.
The police are searching for the attackers, who are described as young men wearing dark clothes.
This is the second assault of the day in the Russian capital, which is suspected to be racially motivated.
A man from Kyrgyzstan was attacked in the afternoon and taken to hospital in a serious condition.