People were advised to avoid Rothwell after a major gas leak in the town.
The leak at Rothwell Medical Centre shortly after 11.30am this morning (Monday) closed the A6 Desborough Road.
Reports suggested a delivery van reversed into a gas main. At one point students at Montsaye Academy were moved to a different part of the site.
Northants Fire & Rescue urged people to avoid the area and buses were re-routed.
Safety advice can be found here.