Detectives are hunting three killers who stole their victim's car after stabbing him to death.
Darryl McClymont, who was 23, was murdered early on Sunday in Isleworth in west London.
The details now from Margaret Feord.
More top news
Paramedics were on standby outside the police cordon as armed officers stood by the property.
A team of researchers has taken samples from the ten busiest London Underground lines to work out which are the dirtiest.
The action comes on top of an emergency timetable which has seen hundreds of trains a day being axed.