A heavy police presence was reported across key streets in the CBD early in the day, with officers closely monitoring movement and dispersing small groups suspected of mobilising for protests.
Roads leading to major public spaces were also under watch, as authorities sought to prevent the demonstrations from gaining momentum.
Witnesses said tensions began building in the morning when groups of young people started assembling in strategic locations within the CBD.
Police officers responded quickly, moving in to disperse the crowds before they could organise into larger groups.
In some instances, officers engaged in running battles with protesters who attempted to regroup in nearby streets.
Business activities in parts of the CBD were temporarily affected, with some traders opting to close their shops amid the uncertainty.
Pedestrians were also seen keeping their distance from areas where confrontations were taking place, as police maintained a tight grip on the situation.
Videos circulating on social media showed police officers confronting protesters and bundling several of them into waiting police vehicles.
The arrests appeared to target individuals suspected of organising or leading the demonstrations.
Despite the disruption, the IEBC voter registration exercise resumed shortly after calm was restored in the affected areas.
Officials on the ground continued with the process under police protection, urging members of the public to proceed with registration as planned.
Authorities have yet to issue an official statement on the number of arrests or whether those detained will face charges.
However, the swift response by security agencies underscores growing concern over planned demonstrations linked to economic grievances.