Election security forces in the Papua New Guinea Highlands have taken a candidate into custody after they say they uncovered a cache of guns in his house.
The Post Courier newspaper reports soldiers and police raided the candidate's home near Mount Hagen in Western Highlands Province and confiscated several weapons and ammunition.
The candidate, a leading businessman, voluntarily surrendered to police and was released after being questioned.
But police later arrested him and the paper says he has been refused bail.
Meanwhile, a senior policeman in neighbouring Enga province says illegal firearms are a major concern and could be the biggest threat to the election.
He has issued a warning that police know who have the guns and they will be targetted.