The International Olympic Committee has banned Ukrainian competitors at the Sochi winter Games from wearing black armbands to commemorate the deaths of protesters and police in Kiev, Guardian reports.

The country's Olympic association said in a statement that it had asked the IOC if its competitors could mark the "deep pain over the loss of fellow countrymen" by wearing black armbands. "The answer was received from the IOC that in accordance with the Olympic charter it is not possible to do this."

Sponsor logos are everywhere at the Olympics, but the IOC regularly bans anything it deems to be political.

Meanwhile, 2 Ukrainian competitors Bogdana Matsotska and Oleg Matsotskyy announce they refuse further performance at the Sochi Winter Olympic Games in protest against the Ukrainian authorities' action vis-à-vis anti-government protesters, Interfax-Ukraine reports.

"In solidarity with fighters on the Maidan barricades and as a protest against lawless actions made towards protesters we refuse further performance at the 2014 Sochi Olympic Games," Matsotskyy wrote on his Facebook page.