The vehicles were parked at the parking spaces allocated to the office of the principal officers as of 7.05pm while Mark and Ekweremadu drove out in their personal vehicles, without siren.
There are five vehicles each in the convoy of the two principal officers.
These consist of two principal vehicles, two security vehicles, two pilot pick up vans and two power motorbike.
A clerk of a senate committee, who spoke on the condition of anonymity with our correspondent on Thursday, explained that it was normal for the principal officers to drop the fleet of vehicles in their possession since their tenure had ended with the valedictory session on Thursday.
He said, ”The vehicles are the property of the National Assembly and the Clerk of the National Assembly, being the chief Accounting Officer, will account for all the vehicles. Hence, the man waited after the session to take possession of the vehicles.”