Four more persons have died from the accident involving two vehicles in the Lagos-Ibadan road crash on Wednesday, bringing the death toll to 13 people.
The Federal Road Safety Corps Ogun sector commander Ahmed Umar said the four died on their way to the hospital.
He said 12 others sustained injuries.
The FRSC official had said on Wednesday the crash killed nine persons, injuring 16 others.
He explained that the accident occurred at about 3.45 p.m. around Wichtech Company, near Danco Station, on the ever-busy expressway.
He disclosed that the accident involved a commercial white Mazda bus with registration number: APP 28 YE, and a blue Volvo truck, with no registration number.
The sector commander further stated that the crash involved 25 persons.
Mr Umar attributed the crash to speed violation and overloading.
He added that the commercial bus driver lost control due to speeding and rammed into the truck.
The sector commander said that clearing of obstruction caused by the crash by FRSC officials and other sister agencies has commenced.
He advised motorists to exercise patience and remain calm, as the FRSC would soon normalise the situation in the axis.
Umar stressed the need for caution, saying that all hands must be on deck to ensure no lives are lost due to carelessness on the road.
While advising motorists always to obey traffic rules and regulations, the commander assured that the FRSC would continually be committed to creating a safer motoring environment.