A man was shot dead by the police in the town of St Neots of Cambridgeshire in Britain, according to local media reports.
The incident occurred after police officers were called to the house at 7.45pm local time, following reports of "concern" about the people inside.
The man, who was reported by the Guardian as being in his 40s, was shot by the police at about 8pm.
He died at the scene, and nobody else was hurt, reported the BBC.
The police told the BBC that it would "not be appropriate to comment further" on the incident at this point in time.
An investigation into the incident will be undertaken by the Independent Police Complaints Comission (IPCC).
An IPCC spokesman said it opened a mandatory investigation into the shooting after being contacted by the police.
The Guardian quoted him as saying: "The man's next of kin have been informed of his death and the area will remain cordoned off for some time whilst IPCC investigators undertake the scene management process.
"The investigation is in the very early stages and we are unable to provide further details at this time."
The IPCC oversees the police complaints system in England and Wales and sets standards by which the police handles complaints.
It is independent of the police and government, and the police must refer the most serious cases to it- whether or not someone has made a complaint.