They were charged with being an accessory after the fact to murder and were due to appear in Pine Rivers Magistrates Court on Monday.
Detective Superintendent Fleming also revealed police believed a rifle was the weapon used to shoot Mr Bell once in the chest.
He said police were examining a number of items seized as evidence in the investigation, so could not say whether detectives had the weapon used in the crime in their possession.
A knife was also found in the vicinity of the crime scene, but police believed it was not linked.
Mr Cunningham, from Nundah, was charged with murder as well as entering a dwelling and committing an indictable offence.
He appeared in the Brisbane Arrest Court on Saturday morning where he was remanded in custody and the case was adjourned until June 11 to be heard in Brisbane Magistrates Court.
Detective Superintendent Tony Fleming told Fairfax Media on Friday night the victim and alleged shooter were known to each other.
Tributes flowed on social media for Mr Bell, who was shot inside the Young Street unit just after midnight on Friday and later died in hospital from a single gunshot wound to the chest.
“Jacob Bell, you were a beautiful soul,” Amanda Clinch said.
“I’m going to miss you, especially your sense of humor (sic) … I only got the pleasure of knowing you a short time, but knowing you was worth everything.
“You always made me smile even though we had our disagreements but that’s how I knew we had an awesome friendship. I’m missing you like crazy.”
“Going to miss the early morning phone calls to let you in so you could eat and sleep,” Kayla Sheppard posted.
“Rip brother … we never really die … until we meet again, rest easy,” Trento Underdown wrote.
“I used to have mad water bomb fights with this guy when I was 10. (I’m) shocked,” Jamie Rundle said.
– with Felicity Caldwell and AAP
Toby Crockford is a breaking news reporter at the Brisbane Times