THE Health and Safety Executive has launched a probe into a boiler explosion at a bungalow which left two pensioners in hospital.
Alf and Hazel Kirk, of April Drive, Monk Bretton, Barnsley, were injured when workmen were repairing their boiler last weekend.
Neighbours heard a huge blast and saw smoke seeping through the roof tiles.
Mr Kirk, aged 77, suffered a broken leg and facial injuries in the blast.
His wife, 73, also suffered facial injuries but was discharged from hospital after treatment.
Health and Safety inspectors visited the bungalow with a gas specialist and South Yorkshire Police.
A HSE spokeswoman said: “We are aware of the incident and are investigating. Inspectors have visited the scene.”
Detective Inspector Gary Askew, of South Yorkshire Police, who is overseeing a police probe into the circumstances, said it had caused “substantial damage”.
The workmen were not injured.