A significant accident on the New Klang Valley Expressway (NKVE) near Shah Alam caused a complete closure of all northbound lanes late last night. The crash occurred shortly before midnight, immediately halting traffic flow. Authorities have not yet released details regarding the number of vehicles involved or any potential injuries. The blockage has created a major disruption for commuters travelling northbound. Motorists are advised to avoid the NKVE and seek alternative routes. Updates will be provided as information becomes available regarding cleanup and reopening timelines. This incident highlights ongoing traffic concerns on major expressways in the Klang Valley.