Police were called at 4.33am on Tuesday, 11 July to reports of a man acting erratically with a knife at a residential property in Melina Close, Hayes.
Officers attended along with the London Ambulance Service.
A man, aged in his 50s, was found inside the property with a stab wound to his neck.
Despite the efforts of the emergency services, he sadly died at the scene.
A 31-year-old man was arrested on suspicion of murder.
The arrested man was taken to the hospital, where he will be assessed before being taken into custody.
The suspect and the victim were known to one another.
The investigation is led by Detective Inspector Adam Guttridge of the Met’s Specialist Crime Command. He said: “We are at the very early stages of our investigation and enquiries are underway to establish the full circumstances.
“A man is in custody and no other persons are sought by my team at this time.
“Our thoughts are with the victim’s family.”
Anyone with information who has not yet spoken with police should call 101 or Tweet @MetCC quoting 967/11JUL.
To remain 100% anonymous call the independent charity Crimestoppers on 0800 555 111 or visit crimestoppers-uk.org.
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