Police officers descended on a block of flats as part of an early morning raid in Douglas.
Residents reported hearing officers running up the stairs of the block and using a battering ram to gain entry to a property on Aboyne Avenue.
A spokesman for Police Scotland confirmed a warrant had been executed in the area but was unable to provide any further details.
Police were spotted entering a block near to the junction with Huntly Place at around 8am on Wednesday.
Kyrstie Hogg, 25, was taking her daughter to school when she said she saw a heavy police presence. “I was just going to drop my daughter off,” she said.
“There was anything between eight to 12 officers outside in the street.
“There was a riot van and police dogs on the scene as well.
“It’s not uncommon to see the police in the area but I was very surprised to see that type of police presence first thing in the morning.”
Fellow resident, Robert Mill, 71, added: “I saw the police coming along Aboyne Avenue. I wasn’t sure what direction they were coming from. I saw two police officers and a man being taken away in cuffs in the morning.”
A resident, who declined to be named, added: “There were police vans and dogs on the scene.
“I heard the police running up the stairs. There was a loud bang as officers either tried to enter the door or forced it open.”
Another resident said: “I noticed there were two police cars and a police van. I could see two police officers standing on the street talking to each other.
“For the amount of police I thought maybe something serious was going on, hopefully everything is OK.”
A Police Scotland spokesman said: “We can confirm a warrant was executed in Aboyne Avenue.”