Police were called to Melbourne Road, Wallington , 30 January following reports of a man armed with a firearm at a residential address threatening self-harm and threatening others.
Firearms officers attended the scene.
The man was found in nearby Bridge Road some time later.
Baton rounds and taser were discharged in Bridge Road by officers attempting to prevent the man from harming himself or others.
The man, believed to be aged in his fifties, discharged a firearm in his possession injuring himself.
Officers present administered first aid prior to London Ambulance Service arriving and taking him to hospital.
He died in hospital on at 06:10hrs on Sunday, 31 January.
Next of kin have been informed. A post-mortem examination will be held in due course. Formal identification awaits.
The Directorate of Professional Standards has been informed.
The Independent Police Complaints Commission has also been informed and is carrying out an independent investigation.
Enquiries continue.
Firearms officers attended the scene.
The man was found in nearby Bridge Road some time later.
Baton rounds and taser were discharged in Bridge Road by officers attempting to prevent the man from harming himself or others.
The man, believed to be aged in his fifties, discharged a firearm in his possession injuring himself.
Officers present administered first aid prior to London Ambulance Service arriving and taking him to hospital.
He died in hospital on at 06:10hrs on Sunday, 31 January.
Next of kin have been informed. A post-mortem examination will be held in due course. Formal identification awaits.
The Directorate of Professional Standards has been informed.
The Independent Police Complaints Commission has also been informed and is carrying out an independent investigation.
Enquiries continue.