A knife-wielding Portland, Oregon man was arrested Monday after he hid for hours in the rafters of a Target store following a confrontation with a security guard, police said.

Officers responded around 10:30 a.m. to reports of a disturbance involving a weapon at the Target in the 9800 block of Southeast Washington Street, according to the Portland Police Bureau.

Witnesses initially told police that a suspect armed with a knife and a hatchet threatened a security guard before fleeing deeper into the store. 

The security officer received medical treatment at the scene.

Police said the security officer was treated medically on scene. (FOX12 Oregon KPTV)

Police evacuated the building and launched a search. They eventually spotted the man armed with a knife and perched on a second-story shelving unit used to store excess inventory in the back of the retailer.

Portland Police negotiated with the suspect for nearly six hours before he surrendered peacefully and was taken into custody. (FOX12 Oregon KPTV)

Officers negotiated with the suspect for several hours. He eventually dropped the knife and surrendered around 4 p.m., police said.

Target was evacuated after the knife-wielding man ran inside and hid. (FOX12 Oregon KPTV)

The man was identified as Michael Harper, 41, of Portland. He was booked into the Multnomah County Detention Center on charges of assault, attempted assault, and unlawful use of a weapon.