Detectives are looking to speak to two witnesses who may have seen a man who was later killed in South Norwood.
Police rushed to Station Road at 5.34am on Sunday, August 7 following reports that a man had been found unresponsive outside Aldi supermarket.
The man, later identified as Abdul Rahman, was pronounced dead at the scene.
Officers are keen to speak to two men who were in the area and may have seen Abdul hours before his death.
Three men have already been charged with murder in connection with the incident. They have been remanded in custody and will stand trial in July 2023.
Detective Wayne Jolley, from Specialist Crime, said: “Our investigation is progressing well but we believe these two men may have information which could assist us further.
“We want to be very clear that these individuals are not suspects, but we know they were in the area of Station Road, Selhurst Road and High Street between about 20:30hrs on Saturday, 6 August and 05:50hrs the following morning.
“The information they hold could be vital to us getting justice for Abdul. If anyone recognises them, please get in touch as soon as possible.”