According to the group, this pattern of human rights violations is increasingly becoming the norm.
President Bola Tinubu arrived in Nairobi, Kenya, on Monday ahead of the two-day Africa-France summit.
The police arrested a suspected arms dealer, Umar Usman, for possessing three fabricated AK-47 rifles, an AK-47 empty shell and a vehicle during a raid.
The DHQ spokesperson, however, said relevant military formations had been directed to verify the allegations of civilian casualties if any.
He said a search of the hideout led to the recovery of a locally made pistol.
Mr Dadiyata was abducted from his residence in Bamawa, Kaduna State, in August 2019.
The police said evidence linking the suspect to the crime had been recovered.
“They change their principle to stay in a party, we change because we want an opportunity to build a new Nigeria,” he said.
The 81-year-old has been in power for four decades.
The decision was announced on Saturday during the party’s national convention.
