A 28-year-old man is now under arrest in connection to a break and enter and acts of vandalism at Etobicoke Civic Centre on Tuesday that included broken windows and smashed windshields.
Toronto Police say the suspect was arrested Wednesday night, but couldn't confirm what lead to the arrest.
On Tuesday, investigators said that security cameras did get clear images of one suspect, but they still didn't know the motive behind the vandalism.
Police were called to the scene just after 4 a.m. after a security guard found broken windows at 2 Civic Centre Court.
Scattered glass could be seen around the building, as well as chairs sitting outside broken windows. All four floors of the building are damaged, and at least five City of Toronto vehicles also have broken windshields.
More than 100 city employees work at the office, which is used by the city's building, construction and planning departments.
"It's astonishing," said one woman trying to drop off an application. "It's sad, very sad."
Ward 5 Councillor Justin DiCiano was able to look inside the building.
"The computers have been thrown through windows, desks. Filing cabinets have been taken apart," he said. "The floor's a mess. Fire extinguishers have been extinguished throughout the building, so it's been completely ransacked."
Victor Kwong, media relations officer for Toronto police, said Tuesday that they're investigating the incident as a break-and-enter.
"Our units have been on scene all day," he said. "We have collected evidence, we have categorized and done a forensic examination of the place."
Coun. DiCiano says the building is equipped with cameras, alarms and pass codes.
Police say the suspect they arrested Wednesday night will appear in Toronto court this morning.