The M5 motorway is closed in both directions between junction 31 (Shillingford Abbot) and junction 30 (Exeter) following a police-led incident, according to National Highways and emergency services reports. The closure begins around 4.30am on Monday, with traffic affected on the main route into and out of Exeter. National Highways says there is currently no estimated time for the road to reopen, indicating that the incident response is ongoing and travel disruption may continue. Drivers are being advised to expect longer journey times and delays while the motorway remains shut. Motorists are also likely to be required to use alternative routes or allow additional time, though specific detours are not consistently detailed in the available accounts. The situation is being managed as a police-led incident, and updates are expected as authorities progress with the response and clear-up work. The closure remains in place at the time of reporting, with reopening timing not yet confirmed.