Police arrested the men on July 28, one day after Knowles was bumped off his trail motorbike and shot multiple times near the round-about at the Milo Butler Highway.
The Fox Hill residents were detained shortly after they arrived in Abaco, police said.
Deputy Commander of the Central Detective Unit Assistant Superintendent Clayton Fernander said that the suspects were freed on July 31 pending further investigations.
Knowles’ death is thought to be connected to the July 21 murder of Dessaline Nicolas, who was gunned down outside his home at Florida Court, Englerston.
Both suspects were reportedly friends of Nicolas.
Knowles, who was otherwise known as “Outlaw” and “Emperor”, had a long-standing feud with Nicolas who also used the name Deslin Nichols.
Days before Knowles’ murder, Police Commissioner Ellison Greenslade named him as one of the country’s most wanted men. Police reportedly thought he had useful information about Nicolas’ death.
Although police have labeled Knowles a notorious criminal, he was never convicted of a major offense. Despite an arrest history for several murders, Knowles only had convictions for firearm possession and drug possession.
Nicolas also had an extensive arrest history, but no convictions.