Ogun State Command of the Federal Road Safety Corps FRSC says four more people have died from the accident involving two vehicles on the Lagos-Ibadan highway on July 21.
The Command stated that the latest deaths bring to 13, the number of people, who died in the accident.
The Sector Commander of the FRSC in Ogun, Mr Ahmed Umar, told newsmen on Thursday in Ota that the four people died on their way to hospital.
He said that 12 others sustained injuries.
On Wednesday, nine people died while 16 others sustained various degrees of injuries in the ghastly accident.
Umar explained that the accident occurred at about 3.45 pm around Wichtech Company, near Danco Station, on the ever-busy expressway.
He said 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 stated that 25 persons were involved in the accident adding that the corpses of the deceased have been deposited at the morgue of Idera Hospital, Sagamu while
the injured are receiving treatment at the same hospital.
Umar traced the cause of the accident to speed violation and overloading on the part of the commercial bus driver making him lose control and collide with 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 situation in the axis would soon be normalized.