EU High Representative for foreign affairs and security policy, Catherine Ashton, Thursday deplored the killing of Dimitrije Janicijevic, municipal councillor of Mitrovica North, in northern Kosovo on Tuesday. Ashton expects a swift investigation into the killing so that the perpetrators are brought to justice. Any use of violence is completely unacceptable, her spokesman Michael Mann said in a statement tonight. According to media reports, Janicijevic was shot dead outside his home late Tuesday night. The motives of the murder remain unknown