The Police in Livingstone have summoned the entire UPND district leadership for questioning.
The more than 15 UPND officials have been summoned for holding an indoor meeting.
The opposition leaders were said to be talking about issues pertaining to the forthcoming parliamentary by-election in the area.
Police have ordered the opposition officials to be at the police station by 08:00 hours on Monday (Tomorrow).
But one UPND official said the party will not stomach this harassment from the PF police any more.
The official said they will go with all their supporters in Livingstone.