Samba Lamsar was shot as he and his friends left a night club in the centre of Russia’s second-largest city.
It is the latest in a wave of recent attacks in the city on foreigners and members of ethnic minorities.
A nine-year-old girl of mixed Russian and Malian parentage was seriously injured in a stabbing in March.
Last week, a teenager was acquitted of stabbing a nine-year-old Tajik girl to death in 2004.
