A Youtube video shows the young men lying down in the middle of the court to spell out the word "customs" with letters painted on their bodies.
A group of young men stormed the court at a basketball game in Kiev in protest against the escalating trade war between Russia and Ukraine.
The European championships game between the two countries' under-16 teams was interrupted when around 10 Ukrainian men wearing woolen Russian caps rushed past security guards and took off their shirts, Rosbalt.ru reported Monday.
Three were detained for the stunt, which also included a banner with the words "Roshen is better than vodka," blogger Konstantin Golushko wrote on Facebook.
The group also scattered candy at the feet of the Russian players from the Ukrainian chocolate maker Roshen, whose imports to Russia have been banned by the Federal Consumer Protection Service.
On Aug. 14 the agency introduced strict risk prevention measures for Ukrainian products, which some say effectively ban all imports.
Ukrainian shipments are being subjected to full rather than selective checks, resulting in delivery delays and financial losses for the exporters, the Ukrainian Employers Federation said in a statement.
Officials from both countries are expected to meet on Monday amid tensions brought on by expected trade deals between Ukraine and the European Union.
The Ukrainian team won the game 77-69.
