The National Authority for Tunnels (NAT) has pushed the date to launch an international tender to supply railcars for phase 1 of Cairo Metro Line 4 to 15 September, from 16 July, reports the local press. The tender was originally planned to begin on 17 June, but was kicked to 16 July. NAT is only accepting bids with Japanese companies acting as the main contractor. The phase will be financed through a loan from the Japan International Cooperation Agency (JICA).