After a months-long joint probe, South Korea's transport ministry and a private-slash-government team has revealed the cause of a spate of fires that affected dozens of BMW vehicles.<br />They say it was cooler leakage caused by a faulty engine part known as exhaust gas recirculation or EGR,... and that BMW deliberately concealed the defects.<br />At a press conference in Seoul on Monday, the team said the German auto giant was aware of the faulty EGR in 2015 as it established a task force team at its German headquarters to tackle the problem.<br />The investigation team said it's turning over its findings to prosecutors.<br />For BMW Korea's late recall of affected models,... the team is pressing for a separate fine of roughly ten million U.S. dollars. <br />