Investigation into explosion at Specsavers in Retford
An investigation is under way into an explosion at an opticians in Retford.
Emergency services were alerted to the incident at Specsavers in Market Place yesterday afternoon and a cordon was put in place.
The explosion caused part of the three-storey building to partially collapse.
There was also a fire inside.
Fire crews from across Derbyshire were deployed to the incident, along with police officers and paramedics.
They spent a number of hours at the scene and enquiries are being carried out.