The crash which occurred around 11:40 am involved a Toyota Camry car with number plate BDG184FY.
The car with its four occupants was said to have somersaulted into the swamp, killing all the occupants.
The accident is attributed to excessive speed after which the car lost control and veered off the road.
The spokesperson for the Ogun State Sector Command of the Federal Road Safety Corps, Florence Okpe disclosed this in a statement made available to journalists on Friday.
The corpses of the deceased have been deposited at the morgue of the General Hospital, Ijebu-Ode.
The statement partly read, “A fatal crash occurred at about 1140hrs on Friday 09/02/24 on the Ore- Ijebu-ode section of the expressway around J3.
“One vehicle, a Toyota Camry blue colour, with registration number BDG184FY was involved.
“A total of four persons were involved and they all died from the lone crash (three male adults and a female adult).
“The suspected cause of the lone crash was excessive speed which led to loss of control and the vehicle veered off the road and somersaulted into a swamp.”
Meanwhile, the Ogun State Sector Commander of FRSC, CC Anthony Uga, has advised motorists on long journeys to always have 15 minutes rest after four hour drive to avoid fatigue while driving and also go with the stipulated speed limit.
Uga sympathised with the family of the crash victims and enjoined them to contact FRSC Ogbere for more information about the crash.
Road accidents have been on the rise in recent times with traffic control agencies warning drivers against overspeeding.