West Yorkshire Police have today launched a murder investigation following the discovery of four bodies at a detached property on Sheridan Way, Pudsey.
Two adults, a 37 year old man and his 36 year old female partner, along with two young boys aged 9 and 1 were found dead upstairs, which was subject to fire damage. West Yorks Police are continuing to work with fire investigators to establish the cause of the fire and the circumstances leading to the deaths.
Post mortems are expected to be carried out today and officers from the North West Inner Neighbourhood Policing Team are in the area offering reassurance to local people.
Detective Superintendent Paul Taylor of the Homicide and Major Enquiry Team, said: "Initially we had concerns regarding the release of harmful chemicals or gases. Following testing, we no longer have any concerns with regards to those working at the scene and we will continue our investigations today
Earlier officers said it was possible 'hazardous chemicals or substances' were present at the house. Neighbours told the Press Association that the family moved into the house a few months ago.
Emergency services were called to the property at 5.30pm on Sunday and discovered the bodies after concerns about the family grew from family members.