Police have completed their investigation into the death of 13-year-old Zara Qairina Mahathir, who was found unconscious in a drain near her school dormitory on July 16.<br /><br />Home Minister Datuk Seri Saifuddin Nasution Ismail said about 60 witnesses from various parties had been interviewed in connection with the case.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
