Bosnia's top court has reiterated its ban on a controversial Serb holiday that is seen as discriminatory to the country's Muslims and Croats.

The Constitutional Court said Friday that Jan. 9 cannot be celebrated as the national holiday of the Serb entity in Bosnia, Republika Srpska.

The holiday marks the date in 1992 when Bosnian Serbs declared the creation of their own state in Bosnia, igniting a war that killed more than 100,000 people and left millions homeless.

Bosnia's Serbs have celebrated the holiday despite protests from other ethnic groups and a 2015 court ruling that it was unconstitutional.

The dispute reflects ongoing ethnic divisions in Bosnia long after the 1992-95 war. Postwar Bosnia is made up of the Serb party and a Muslim-Croat part, with a joint government.