A 35-year-old man has been arrested on suspicion of criminal damage after explosive devices were thrown at the home of former Sinn Féin leader Gerry Adams.
Police said the man was detained last night. He was later released on bail pending further enquiries.
Officers also carried out searches of properties in west Belfast last night.
The homes of Adams and senior Sinn Féin figure Bobby Storey were attacked on Friday night, with the republican party condemning the "reprehensible and cowardly" attacks.
No-one was injured, but a car in the driveway of Mr Adams' home was damaged.
The PSNI previously said officers had seized "remnants of large industrial, firework-type devices, capable of causing serious damage or injury" at two houses in west Belfast.
Mr Adams said he was "very, very thankful" that no-one was hurt.
Party president Mary Lou McDonald said on Monday that Sinn Féin members were reviewing their security in the wake of the attacks.