Police are appealing to find two men wearing high visibility jackets who were seen near a bungalow that was deliberately set on fire in Leicestershire on Sunday night.
They may be witnesses to what happened and so we would be keen to speak to them or anyone who may have seen them.
"It is likely that the person or people involved in setting this fire may have caused injuries to themselves including burn injuries so we would appeal for anyone who knows anyone who has received such injuries since Sunday night to contact us with information.
Officers were called to Aldridge Road in the early hours of Monday morning to reports of an explosion. Two officers broke into the bungalow and rescued to deaf people inside the property.
More top news
The wheelchairs are specially adapted for disabled children to use during sport and exercise and are a lifeline for those who use them.
The Police Service of Northern Ireland and the Met Police have been asked for any information that they had advanced notice of the attacks.
Storm Doris bringing heavy rain and gales.