A third person has been arrested over Thursday's kidnapping in County Antrim.
A 33-year-old man and a 31-year-old woman are also being questioned after a man was taken from his home in Randalstown by a gang.
They put him in his car and drove off, demanding a ransom from his family. It is not clear if money was paid.
The man was released at about 0100 GMT on Friday near Armoy. A 32-year-old man was arrested in Antrim on Sunday afternoon.