A gay serial killer tried to pin the blame on another of his victims with a sham suicide note, a court heard.
Stephen Port has been accused of drugging men in order to rape them whilst unconscious, also killing four of his victims.
The Old Bailey heard he would invite the men to his flat, after meeting them on apps such as Grindr and Fitlads, and spike them with the drug GHB (known as liquid ecstasy).
It is alleged that he drugged a total of 12 young men between 2012 and 2015, with four dying from drug overdoses.
The court heard that Port tried to blame the death of one victim, George Kovari, on former Dartford Grammar pupil Daniel Whitworth, who was also killed, by forging a suicide note with a confession.
Both bodies were found in the same location three weeks apart in Barking, east London in 2014.
Police at first took the note at face value, but a handwriting expert found it to be forged. The note urged its finder not to blame Port for the crime.
Port has denied four counts of murder, four alternative counts of manslaughter, ten counts of administering a substance with intent, four counts of assault by penetration and seven counts of rape.