NDC leader Chishimba Kambwili has arrived at Luanshya Central Police station for questioning.
Kambwili arrived at 14:06 hours in a police Land Cruiser which ferried him from Lusaka.
Kambwili was immediately taken to the reception to wait for his lawyers.
Later, Kambwili demanded to get his medication.
Meanwhile, his son Mwamba and NDC Secretary General Mwenye Musenge were blocked from entering the police station.
More details later.