KALAMAZOO, Mich. (WOOD) — The ‘suspicious device’ a man was seen wearing in downtown Kalamazoo that caused evacuations Wednesday is believed to be a weighted workout vest, police say.

A person called 911 around 10 a.m. to report “a man who was wearing a suspicious looking vest that looked like it was carrying explosives,” the Kalamazoo Department of Public Safety said in a Facebook post.

An investigation found it was a downtown resident who was exercising while wearing a weighted workout vest, police say. KDPS shared a photo to illustrate what a weighted workout vest looks like.

KDPS tweeted at 10:53 a.m. that officers were called to the area of South Street near Burdick Street for a report of “a man carrying a suspicious device on his chest.”

The Kalamazoo Public Library at the corner of South Street and Rose Street was among several nearby buildings that were evacuated. Library staff told News 8 that the situation did not involve the library.

KDPS officers had blocked several streets as a precaution. Lovell was taped off to beyond Kalamazoo Mall, according to a News 8 crew at the scene.

Darlene Archer, who lives in an apartment complex nearby, said she did not hear any sirens but did notice the police presence.

“I could see the flashing of a police car. And then I looked out and I see a couple of officers, I see the manager of (the apartment complex) and the office people and they’re all looking up and they’re on their cell phones … so I didn’t know what was going on,” said Archer.

When she went down to walk her dog in the park, she noticed the roads taped off and the large number of police. Archer asked an officer what was happening.

“He said, ‘We have a threat and we’re not sure where he’s at but it looked like possibly on top of the roof,’” Archer said. “He said, ‘There’s somebody up there, supposedly, that’s making a threat. So that’s why we have it all blocked off.’”

Within about 15 minutes, the search appeared to be over. A large group of KDPS officers came out of a building on Kalamazoo Mall and crime scene tape was being taken down. People were allowed to walk on the street again.

Around 11:42 a.m., people were being allowed back in buildings.

Anyone with information is asked to call KDPS at 269.337.8120 or contact Silent Observer.

— News 8’s Madalyn Buursma contributed to this report.