A woman, aged 65, has been arrested on suspicion of murder and remains in custody at a north London police station.
Detective Chief Inspector Matt Bonner of the Homicide and Major Crime Command leads the investigation.
Any witnesses or anyone with information is asked to contact the incident room on 020 8358 0200 or call Crimestoppers anonymously on 0800 555 111
Detectives have launched a murder investigation following the death of a man in Pimlico.
Police were called at approximately 6.05pm last night by London Ambulance Service to reports of a man stabbed at a residential address in Lumley Flats, Pimlico Road, SW1.
Officers and London's Air Ambulance also attended the scene but the man, believed aged 33, was pronounced dead.
A 23 year-old man was taken to hospital in a serious condition after being found with a gunshot wound in Pimlico. The man had been shot in the leg and also had stab wounds.
He was found at an address in Cumberland Street just after midnight. The incident is being investigated by detectives from the Trident Gang Crime Command. They are appealing for any witnesses to come forward.
An autistic teenager who was slashed across the neck in a random attack has told ITV London that he "did the right thing running away". Eamonn Finn, 16, said that he would only be fine if the boys are caught.
The victim has asked for his identity to be protected:
The mother of an autistic teenager attacked by three boys has told ITV London that Eamonn Finn "wants to see them caught". Margaret Finn said: "Eamonn's been raised to believe that if you do something wrong, there are consequences to those actions".
Police are seeking three men who assaulted an autistic teenager in Pimlico, in what appears to be a "random" attack. Detective Constable Krisan Kapur:
This appears to have been a random attack on a teenager who was heading to meet friends at a local youth club. I would appeal to anyone who saw the assault to contact police. It is fortunate that the victim's injuries were not more severe as he was slashed across the neck.
Anyone with information is asked to call Westminster CID on 07500 766464 or via 101. To remain anonymous please contact Crimestoppers on 0800 555 111.
Police released footage of the aftermath of an attack launched on an autistic teenager in June. Eamonn Finn sustained a slash wound to his neck, after which his mother appealed on Facebook for any more information on the assault.
The suspects are described as Hispanic or black.
A mother of an autistic teenager, slashed across the neck by three assailants, has said that she wants them to "face the consequences".
Eamonn Finn, 16, is said to have been walking around Pimlico, in central London on June 4 at around 7.30pm. Margaret Finn appealed for help on social media:
They did far more than stab him, they've also taken away the only bit of independence he had, which took us almost two years to prepare him for. I'm now too frightened to let him back out, and I'm getting the fallout from that too.
A mother has sent out an appeal to find the people responsible for slashing her autistic teenager across the neck.
Margaret Finn wrote on her Facebook that Eamonn had been walking in the Pimlico area, in central London on June 4. She reported that he was subsequently attacked by three males aged "up to 22".
Anyone with any information is asked to contact Charing Cross CID or Crimestoppers, which can be done anonymously.
A 16-year-old boy was slashed across the neck after being assaulted in Pimlico, central London. The victim was attacked in Regency Street last night.
The boy was surrounded by a group of men described as Hispanic and black. The teenager's injuries are not life-threatening. Anyone with information is asked to call Westminster CID on 07500 766464 or, to remain anonymous, Crimestoppers on 0800 555 111.