JIANLI, China, Sha'ban 17, 1436, Jun 4, 2015, SPA -- China has pledged that there would be "no cover-up" of an investigation into the sinking of a cruise ship on the Yangtze River, which has left 75 people dead and over 370 missing, as angry families gathered near the rescue site to demand answers, Reuters reported. President Xi Jinping convened a special meeting of the ruling Communist Party's Politburo Standing Committee, the apex of power in the country, on Thursday to discuss the disaster, state news agency Xinhua said. Authorities are investigating the crew members who were rescued from the Eastern Star, which capsized in a freak tornado on Monday night, and were "gathering evidence", Xu Chengguang, the spokesman for the Ministry of Transport, said. "We will never shield mistakes and we'll absolutely not cover up (anything)," Xu told a news conference on Wednesday night, adding a preliminary investigation had begun. --SPA 12:52 LOCAL TIME 09:52 GMT www.spa.gov.sa/w