Penrhos Crescent in Cardiff was cordoned off by police
Police are continuing to hunt for a man wanted in connection with a suspected robbery which left one man dead and another with serious head injuries.
Armed police surrounded a house in Cardiff in the search for him after hostages were earlier reportedly taken at an office in Pontypool.
The hunt moved to Cardiff where some homes in Penrhos Crescent, Rumney, were evacuated.
The fire and ambulance services were later stood down at around 2030 BST.
Witnesses said armed police took up positions in mid afternoon.
It followed the reported robbery at a driver recruitment agency on an industrial estate in New Inn, Pontypool.
Gwent Police said they were called at around 1325 BST and when officers arrived they found one man fatally injured and another with serious head injuries.
The injured man was taken to the Royal Gwent Hospital in Newport as were two other men who were treated for smoke inhalation from the blaze started during the incident.
The offices of Driverline 247, were also set alight.
Police used dogs and a helicopter in the search for the suspect who fled the scene at South Pontypool Industrial Park and Torfaen Business Centre.
The ongoing armed incident in Cardiff is thought to be related to the killing
Police in Cardiff later said there was an ongoing incident in the city but would not say if it was linked to the incident near Pontypool.
Andrea Osborne was one of a number of people stopped from crossing the police cordon at the scene.
She found herself a car with her brother Jason and her three-and-a-half-year-old niece Ayah.
She said: "My brother went round to the corner shop with his little girl and when he came back, that's when the police turned up, literally right outside my mother's door."
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