CHICAGO (WGN) — Authorities detained at least three individuals following a tense encounter between local residents and federal agents on Chicago’s Northwest Side on Saturday morning.

Eyewitnesses reported to WGN-TV that the incident left them unsettled, as they demand explanations for the federal agents’ actions against a landscaper working in the area.

Nearby resident Brian Kolp recounted how he was enjoying a morning coffee on his couch when commotion outside drew his attention. Upon looking out, he witnessed agents making an arrest on his front lawn.