A 44-year-old man has been arrested in connection with murder of north Belfast man Kevin Keaney.
He was arrested in the west of the city on Wednesday morning and is currently being questioned by police.
It's the third arrest in connection with the killing.
Meanwhile the brother of Mr Kearney, who was gunned down by dissidents last week, has said the killing has 'torn the family part' as police filmed a reconstruction at the park where his body was found.
Kevin Kearney's body was found in a lake at Alexandra Park last Wednesday, a day after he was gunned down while taking his dogs for a morning walk a short distance from his home in Dunmore Avenue.
Police have now recreated the 46-year-old victim's last moments with the aid of an actor, during a reconstruction which was filmed on Tuesday morning.
It came 24 hours after the father-of-four was laid to rest.
Police have said a silver Peugeot 406 car - registration number GNZ 8168 - may be connected to the killing.
It was placed at Donore Court in the New Lodge area where it had been set on fire last Tuesday.
Speaking on Tuesday, Mr Kearney's brother Martin (48) appealed for the local community in helping catch his killers.
He said his family was "destroyed" by his murder.
"It has torn us apart. We are devastated," he said.
"Kevin was not an angel but, for all its faults, the British justice system is a better way to deal with these things than someone stepping out of a bush, shooting Kevin dead and leaving four children without a father.
"I would appeal to the nationalist and republican community to come forward and help to bring these people to justice.
"If you don’t want to talk to the police, then talk to Sinn Fein about it so that these evil people can be brought before the courts."
Meanwhile it was revealed the republican group which last week murdered the north man Kevin Kearney has given two of his friends 48 hours to leave the country or be killed.
Only hours before Mr Kearney's funeral on Monday, armed and masked members of the group calling itself the 'IRA' entered a social club in Ardoyne and publicly read out the threat.
Mr Kearney's funeral mass was held at Holy Family Church on the Limestone Road on Monday.
A 45-year-old man arrested in north Belfast by detectives investigating the murder has now been released unconditionally.
Friends of Mr Kearney's have claimed that dissident republicans are taxing drug dealers and that the father of four was murdered for refusing to pay the IRA extortion money.
PSNI Detective Chief Inspector Justyn Galloway said while the investigation was "making progress" police still needed "assistance on specific points".
"Did anyone see Mr Kearney in Alexandra Park last Tuesday morning between 8.45am and 9.15am with his dogs? We know that people were in the park and I would make a specific appeal to people running in the park," he said.
"Did anyone see a silver Peugeot 406 car in the Alexandra Avenue, Antrim Road area last Tuesday morning? Its registration number is GNZ 8168. This car was found burnt out at Donore Court in the New Lodge area around 9.30am on Tuesday morning.
"Does anyone have any information about Mr Kearney or those involved in his murder?"