Detectives are appealing for witnesses and information following the suspicious death of a man in Battersea and a linked incident in Walthamstow.
A man and a teenage girl have been arrested in connection with both matters and officers are concerned there may be further offences.
On Tuesday, 4 June at 6.38pm police were called by the London Ambulance Service to a block of flats in Lombard Road, SW11 after the body of a man was found.
Officers attended and the man was pronounced dead at the scene.
Next of kin have been informed and the man has been identified as Adrian Murphy, aged 43, from the SW18 area.
A post-mortem examination at St George’s Hospital on Wednesday, 6 June failed to determine a cause of death and we await the result of further tests.
Property was stolen from the premises where Mr Murphy was found.
Enquiries have linked this incident to an earlier allegation of rape at an address in E17 on Thursday, 30 May at around 13:00hrs.
The 40-year-old victim believes he was drugged by a man he had invited to his flat after meeting him on a social networking platform.
He became unconscious and was found later that day by a friend who raised the alarm.
The victim was taken to Whipps Cross Hospital and has since been discharged.
His flat had been ransacked while he was unconscious and property including laptops, mobile phones, a wallet and cash, stolen.
A 24-year-old man was arrested late on Tuesday, 12 June, on suspicion of murder, rape and theft. He has since been bailed to attend a police station at a later date.
A 17-year-old girl was arrested earlier on 12 June on suspicion of murder and theft. She has been released under investigation.
The case is being investigated by the Homicide and Major Crime Command under Detective Chief Inspector Rob Pack.
DCI Pack, said: “We have linked these two incidents through our suspects and our enquiries continue to establish the exact circumstances.
“We know the victim in the Walthamstow incident met the male suspect through a social networking site and we are investigating whether there is a similar connection in Mr Murphy’s death.
“Both incidents happened over a short period of time and thorough enquiries have led us to make these prompt arrests. However, there is a possibility other offences may have been committed before 30 May.
“Has anything similar happened to you, or someone you know? A meeting arranged online that has led to intoxication, robbery and possibly sexual assault. Please have the confidence to approach my team so we can investigate what happened to you. You can also contact third party organisations such as the charity Galop. You will be taken seriously and treated with sensitivity.
“I would also be keen to talk to anyone who saw anything suspicious on the afternoon of 4 June around Lombard Road, anything that looked out of place.”
Anyone who can help is asked to contact 101, quoting CAD 6467/4 June, Crimestoppers anonymously on 0800 555 111 or the charity Galop or via their Shoutline on 020 7704 2040.