A federal high court in Abuja has refused a senator, Dino Melaye his application from preventing policemen from staying at his residence.
An ex-parte application could have allowed the judge to grant the order without hearing from the police.
In a ruling on the ex-parte application on Thursday, a judge, N. E. Maha, refused the application, but ruled that the substantive matter be granted accelerated hearing.
The police have insisted on arresting Mr Melaye, accusing him of involvement in the killing of a police officer.
The controversial senator is already facing two separate charges of attempted suicide and allegedly arming criminal suspects.