He said the interrogation of the suspects led to the recovery of additional exhibits linked to the case.
Four injured victims were taken to the state hospital.
Mr Biu also warned drivers against excessive speed to avoid crashes while on the road.
Florence Okpe, the spokesperson for the Federal Road Safety Corps (FRSC) in Ogun, confirmed the incident in Abeokuta.
The bus marked AGL 886 YD was engulfed by fire due to an engine overflow.
The criminals specialise in the theft of generating engines and taking them to Owode Onirin, in Kosofe LGA, Lagos, to sell.
Mr Umar explained that the accident was caused by excessive speed and loss of control by the bus driver who rammed at the stationed truck.
The accident occurred at 12:01 a.m. and was caused by wrong overtaking, speeding, and loss of control by the luxury bus driver.
The Mazda bus rammed into the truck as it made a U-turn at Aseese.
