A 35-year-old man arrested on suspicion of criminal damage after explosive devices were thrown at the home of former Sinn Fein leader Gerry Adams and a top Provo boss has been released on bail.
The PSNI said the man was detained on Tuesday night for a range of offences linked to the attacks.
Officers also carried out searches of properties in west Belfast on Tuesday night.
The homes of Adams and senior IRA leader ‘Big’ Bobby Storey were attacked on Friday night.
The party condemned the attacks “reprehensible and cowardly” attacks.
No-one was injured, but a car in the driveway of Mr Adams’ home off the Glen Road was damaged.
Damage was also caused at ‘Big’ Bobby Storey’s home in the Coolnasilla area of west Belfast.
Storey is the right hand man to IRA Chief of Staff Martin ‘Duckser’ Lynch.
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 Fein members were reviewing their security in the wake of the attacks.
While Sinn Fein has blamed dissident republicans for the attacks, police have yet to publicly attribute responsibility.
Hundreds of people attended a rally in west Belfast on Monday evening to show their support for Mr Adams and ‘Big Bobby’.
At the event, Mrs McDonald branded the dissidents as “enemies of the people”.