Four persons died in the early hours of Monday along the Lagos-Ibadan highway, Ogun State.
The fatal crash occurred at about 12:45am, the Federal Road Safety Corps (FRSC) told newsmen in a statement.
According to the FRSC spokesperson in Ogun, Florence Okpe, a total of 21 persons involved in the crash, comprising 13 male adults and eight female adults.
Okpe said three of the 21 persons, one male and two females sustained injuries in the road crash.
Voice Air Media learnt that the four deceased victims were all male adults.
A luxury bus with registration number, ACA533ZP had crashed with another vehicle that had no registration number on it.
“The suspected cause of the crash was excessive speed which led to loss of control,” Okpe added.
She disclosed that the injured victims were taken to Famobis Hospital for medical attention, while the corpses were deposited at Idera morgue.
The FRSC Sector Commander in Ogun, Anthony Uga, had described the incident as avoidable if necessary caution had been put in place and simple rules obeyed.
Uga advised motorists to apply common sense speed limit, especially at night when visibility is poor.
He sympathised with the families of the victims for the loss, enjoining them to contact FRSC, Mowe unit Command, for more information about the crash.