Detectives investigating the murder of Dean Edwards who was found shot in Penge, on Sunday, 12 July, have made further arrests.
A 30-year-old man and a 22-year-old man were arrested on suspicion of murder on Monday, 12 October.
The 22 year olds was also arrested on suspicion of a section 5 firearm offence (possession of a CS canister) and third man was also arrested on suspicion of possession with intent to supply drugs.
They were taken to a London police station where they remain in custody.
Dean, 43, was walking through Betts Park on his way home from meeting his friends for a drink and was about to leave the park via the Croydon Road exit, when he was shot in the back of the head.
CCTV footage has shown that Dean left the pub at 11.50pm on Saturday, 11 July and started making his way home.
He then entered Betts Park at 12.15am and was walking towards the Croydon Road exit near the Tremaine Road junction, when he was shot sometime between 12.15am and 1am
Subsequently, police were called to the location by the London Ambulance Service at 2.20am and he was pronounced dead at the scene.
Officers from the Specialist Crime South Command are investigating.
Anyone with information regarding the incident is asked to contact homicide detectives via the incident room on 020 8721 4868, or via 101 quoting CAD 1402/12JUL.
A 25-year-old man has previously been charged with Dean’s murder.