The senators are Pam Mwadkon (ADP-Plateau North), Anthony Ani (APC-Ebonyi South) and Mustapha Musa (APC-Yobe East).
Natasha Akpoti-Uduaghan on Thursday took the oath of office and allegiance as senator representing Kogi Central at the National Assembly.
Amos Yohanna (PDP-Adamawa-North), on Wednesday at plenary, took his oath of office and allegiance.
The Senate had on April 5, adjourned plenary to April 25 for Easter and Sallah holidays.
A statement by the Clerk of the Senate, said Monday in Abuja, that the plenary had been rescheduled from March 14 to March 21.
