Detectives are investigating whether a firearm confiscated in Manenberg is linked to the shooting of a 13-year-old boy.
He was shot and injured on Wednesday in Great Fish Avenue.
Acting on information, members of the Anti-Gang Unit raided a residence in McCrawl Street.
When they entered, a woman was seen rushing to the back of the residence with an object in her hand.
Police say it was later identified as a 9-mm CZ pistol.
It had a fully loaded magazine with 15 rounds.
The 34-year-old suspect faces a charge of illegal possession of a firearm and ammunition.