The Nigerian Safety Investigation Bureau, NSIB, has said there is no trace of three missing persons, as well as the debris of the helicopter that crashed in Port Harcourt, the Rivers State capital. NSIB revealed this in a statement on Saturday, 48 hours after the incident. The statement was signed by the Director of Public Affairs and Family Assistance, Bimbo Oladeji. Oladeji confirmed that “as at 07:30 am, local time, rescue teams resumed search operations in line with global best practices,” but left the scene same day without finding anything. According to the Bureau, the search area was ex…