Officers closed off a large area on Peter Fabers Vej in the western part of the city and evacuated residents of two apartment buildings as police searched the area with bomb-sniffing dogs.
According to East Jutland Police, a “small amount” of explosives were found in the basement of one of the buildings. The material was destroyed by explosives experts from the Danish military.
Police said that a tip-off about a suspicious item in the basement was received at around 7am on Sunday. After officers arrived and blocked off the area, they made contact with the 24-year-old man who “despite repeated requests from police, did not wish to leave the apartment”.
Police then used tear gas to storm the apartment and arrest the 24-year-old.
In connection with the man's arrest, East Jutland Police also searched a residence in Aarhus's Viby district. No explosives were found there, police said.
On Monday morning, police said that the 24-year-old man has been charged with weapons violations and that he denies any guilt.
“We have questioned the accused and did not receive any further information,” police spokesman René Raffo told broadcaster DR.
According to Politiken, the man in question is a Somali citizen but police would not say whether he had any previous run-ins with the law. Raffo told the newspaper that at this point in the investigation, there is no evidence to indicate terrorism.
"We naturally have a theory on how things tie together, but I will not go into the details now. Now we need some time to dig deeper into the investigation," he told Politiken.
The 24-year-old man is scheduled to face more questioning on Monday.