Spokesperson for the command, DSP William Aya, disclosed this while speaking with the News Agency of Nigeria on Monday.
Aya said that the suspects were brought in on Friday.
Abuh, a former councillor and Women Leader of the Peoples Democratic Party, was set ablaze on November 18 in her husband’s house at Ochadamu by hoodlums.
Aya said the police had started interrogating the suspects to ascertain their level of culpability in the death of the woman.
He said that the outcome of the investigation would be made public as soon as it was completed.
President Muhammadu Buhari had on Sunday directed the police to arrest the killers of Abuh with a view to bringing cupri to justice.