Burundi's ruling party has accused the European Union of ethnic bias after it slapped sanctions on four senior officials, blasting the move as a "provocation". Last week the EU slapped a travel ban and an asset freeze on four Burundi officials, accusing them of blocking efforts to resolve the political crisis in the central African country, prompting a furious response from the ruling CNDD-FDD party of President Pierre Nkurunziza. Bernard Bankukira reports from Bujumbura..