The other woman was known as Mrs. Promise Uche-Nwamkpa, wife of an ex-member of the Abia State House of Assembly.
Maduchukwu was a senior special assistant on media to Mrs. Ikpeazu.
The News Agency of Nigeria (NAN) learnt that the accident happened when the motorcade was coming back from Umuahia from Ntigha-Uzor in Obingwa Local Government Area of Abia, where Ikpeazu had attended a burial ceremony.
Witnesses said that the Hummer that was carrying the deceased somersaulted three times when the driver tried to overtake a vehicle at Ndiolumbe around 5 p.m.
A female occupant of the vehicle, who came out unhurt, said that the driver was at a very high speed when the accident happened.
“The driver was on high speed and everybody in the vehicle was asking him to slow down. Suddenly the bus started jumping up and down before it started somersaulting,” she said.
She said that the vehicle somersaulted about three times and that she only found herself seated safely on a field by the road.
The middle-aged, fair-complexioned woman, who has adorned herself in a dress designed for the burial, was full of praises to God, saying that “I escaped death by His grace.”
The driver of the Hummer, Mr. Bright Ugwubujor, accused the accident of brake failure.
Sharing the incident to NAN at the Accident and Emergency Unit of the Federal Medical Centre, Umuahia, Ugwubujor said that the accident happened when he tried to overtake a vehicle ahead of him.
“When I tried to overtake the vehicle, I noticed an oncoming vehicle and attempted to retreat but I encountered a bump on the road and when I tried to apply the brake it could not work.
“Immediately, the vehicle began to somersault,” he said.
A medical doctor at the unit, where all the victims were brought for medical attention, confirmed the death of the two women.
He said that other occupants of the bus, including the driver sustained bruises and minor injuries.
He further said Mrs. Promise Uche-Nwamkpa, was brought in dead to the hospital.
The second woman, Mrs. Nwamaka Maduchukwu, gave up while doctors were battling to resuscitate her with the aid of an oxygen, he said
Maduchukwu was a widow and mother of four children.