PSNI arrest man in connection with murder of loyalist in front of his three-year-old son

A man has been arrested over the murder of a loyalist in a busy supermarket car park as his three-year-old son looked on.

Colin Horner, 35, was shot dead by a lone gunman among crowds of shoppers outside the Sainsbury's superstore on the outskirts of Bangor, Co Down, on Sunday afternoon.