Police patrol outside the National Palace of Culture during a ceremony starting Bulgaria's six-month presidency of the European Union in Sofia, Bulgaria, January 12, 2018. (Reuters/Stoyan Nenov)
Police patrol outside the National Palace of Culture during a ceremony starting Bulgaria's six-month presidency of the European Union in Sofia, Bulgaria, January 12, 2018. (Reuters/Stoyan Nenov)

Investigative reporter attacked in Bulgaria