A 45-year-old man has been arrested in connection with the murder of Danny McKay in Newtownabbey a fortnight ago.
The man from the New Lodge area of Belfast has been taken to the Antrim serious crime suite for questioning.
Mr McKay, who was 36, was shot dead at his home on the Longlands Road last month. His funeral took place on Friday.
At least two armed men were involved in the attack. Police suspect up to four men were involved in the murder plan.