In July 2011, while Liu was still under investigation, the Wenzhou train collision, in which a faulty signal box led to the deaths of forty people and injured one hundred and ninety-two, exposed him to further accusations of systematic corruption and incompetence within his Rail Ministry. The Railway Ministry unsuccessfully attempted to cover up the details of the crash, but lingering public criticism led Prime Minister Wen Jiabao to visit the crash site shortly after the incident, where he promised a full, public government investigation and justice for those found responsible. The government released its findings in December 2011, in which it acknowledged and blamed the disaster on "serious design flaws", "a neglect of safety management", and flaws in the bidding and testing processes used to acquire materials. The report publicly blamed fifty-four private and government figures for the disaster, the most prominent of which was Liu Zhijun.