Police investigating dissident republican activity seized a gun and ammunition as they swooped on two houses yesterday morning.
etectives from PSNI Serious Crime Branch searched a property on Hamill Street in Belfast and one at Foxes Glen in Dunmurry.
Army bomb disposal experts, along with forensic teams and canine units, remained at the property in Foxes Glen well into the afternoon. A line of forensic officers was seen combing through the back garden.
A gun and ammunition were seized at the house.
Detective Inspector Stuart Griffin said: "A number of items have been recovered from two properties and will be taken for further examination. Two men aged 37 and 48, and a woman aged 35 have been arrested and taken to the Serious Crime Suite at Musgrave PSNI station for questioning."
The Dunmurry search took place less than a mile from Glenwood Court where Joe Reilly (43) was shot dead last Thursday.
Ulster Unionist MLA Doug Beattie paid tribute to the PSNI's professionalism and courage.
He said: "It's absolutely clear that police are in a fight against dissident republicanism.
"I think it's alarming but we must support the police. These people have no place in our society and I congratulate the police for the way they go about their business."
Meanwhile, police officers searched a property in the Glenwood View area of west Belfast last night. This operation is believed to have been in relation to the murder of Mr Reilly.