Police using battering rams broke down the door of a Dundee flat in a suspected drugs raid.
Sniffer dogs were also brought in to search the property, as well as a car parked nearby, during the incident.
Officers confirmed they have launched an investigation.
It’s understood that no arrests were made, but officers were seen carrying brown paper bags away from the scene.
The raid took place at an address on Birkdale Place, in the Ardler area of the city.
Neighbours witnessed police officers with sniffer dogs entering the three-storey block of flats.
They were then seen using battering rams to gain entry to a property.
People living in the block told how they were awoken by the activity in the building.
One woman said she heard a loud bang as officers descended on the flats.
She said: “To begin with, I didn’t really know what was going on, but when I saw the police dog I did suspect it had something to do with drugs.
“Several police officers and at least one dog went up the stairs to a flat on the top floor.”
The woman, who has lived there for eight months, said she was surprised to see all the activity.
She added: “There used to be a bit of bother here, but it has been much quieter recently.
“I don’t really know what happened after the police entered the building.
“They were here for around three hours before they finally left.”
She said that she saw officers carrying brown paper bags when they left the flat.
A spokeswoman for Police Scotland confirmed that police had been called to a property on Friday morning to execute a warrant in connection with alleged drug offences.
But she said that no further details were available.
Officers were in attendance at the flat until around midday.
The raid came as officers continue Operation Slate — set up to target drug crime in the city.
It has resulted in a series of intelligence-led activities aimed at tackling the supply and production of substances in and around Dundee.
More than half of all drug offences in Tayside during the first quarter of 2015/16 took place in the city.
The Tele told earlier this month how a massive £500,000 of drugs had been taken off the streets of Tayside during the first seven months of the operation. At least 1,386 people have been charged with various alleged drug offences following the busts around the region.
The raids have also seen more than 20 different types of drugs taken off the streets, police confirmed.