A Romanian truck driver has been detained in connection with one of the deadly pile-ups on Bulgaria's Trakia highway, while prosecutors have questioned 44 witnesses and are continuing to investigate the circumstances of the crashes, officials said. The driver will face further questioning as part of the pre-trial investigation, Senior Commissioner Dobrin Dimitrov, head of the Yambol Regional Directorate of the Interior Ministry, announced at a briefing, BTA reported. The Romanian national has already been questioned and remains in police custody. ...