Six people have been arrested in a major operation into the criminal activities of the Ulster Volunteer Force (UVF) in east Belfast.
Raids started early on Friday morning and Paramilitary Crime Task Force officers have been searching six properties.
The PSNI linked the operation with the murder of Ian Ogle in east Belfast on 27 January.
Mr Ogle, 45, died after he was stabbed and beaten in the street near his home.
The PSNI said tackling the UVF was a priority for police because of its drug activities.
At the scene: Kelly Bonner, BBC News NI
These searches around greater Belfast have been in the pipeline for months.
It’s a pretty significant operation and I’ve been out with the team since early this morning.
We attended a house raid in east Belfast at 07:00 GMT.
A team of officers broke the door down and arrested one man inside. The team are currently still here searching the house.
Det Supt Bobby Singleton said the UVF were “nothing more than a drugs gang” and that the police had a good case against those who had been arrested.
“These gangs aren’t there to help the area they’re in – they’re there to exploit and make money off the community,” he said.
The UVF is a loyalist paramilitary group which was responsible for hundreds of murders during the Troubles in Northern Ireland.
In some cases its members continue to be heavily involved in violence and crime.