A second man has been arrested over the murder of a loyalist in a busy supermarket car park at the weekend in Co Down.
As his three-year-old son looked on, Colin Horner, 35, was shot dead by a lone gunman outside the Sainsbury's superstore on the outskirts of Bangor on Sunday afternoon.
The PSNI said a 47-year-old man was arrested in Newtownards tonight and is being questioned at a Belfast city centre police station.
A 28-year-old man detained last night remains in custody.
It is understood Mr Horner, from Carrickfergus, Co Antrim, recently relocated to Bangor amid fears he would be targeted in the same loyalist paramilitary feud that claimed the life of his friend George Gilmore two months ago.
Mr Gilmore, 44, was shot dead in Carrickfergus in March.
On Monday, Detective Superintendent Richard Campbell confirmed a link between Mr Horner's murder and a long-running Carrick feud between rival loyalists was one line of inquiry.
