Officials are mum about the driver in the AJ crash.
From local sources, however, it is said the driver was at a high speed and trying to wrongfully overtake (undertake) on the expressway while going from Lagos to Ibadan, near Sagamu interchange, just before the Danco Filling Station in Makun. It is a busy area, and there were multiple eyewitnesses. As per information from local witnesses and what the Federal Road Safety Commission (FRSC) officer mentioned on the first day, the traffic was high, and AJ's driver tried to undertake another car at speed using the shoulder. That is when they encountered a parked lorry (heavy truck) full of Soya Beans. The driver tried to avoid it but only managed to avoid his side and hit the passenger side, where the two people who died were seated in the front and back, respectively. AJ was seated behind the driver. They were also going in a convoy with AJ' SUV, a bulletproof Lexus, in the front and followed by his security in a Mitsubishi Pajero SUV. The two people died instantly from a direct blow to the head as their side hit the truck, and a part of its metal body went through the windscreen and hit both the front and rear passengers on that side. AJ is said to be conscious but waiting around 8-10 minutes inside the SUV until the FRSC car arrived. It was then decided to take him to the hospital instead of waiting for the ambulance, which would have taken some time.
Initially, some people reported that the driver may have been either related or from the same village (tribal connection) to AJ, and due to the president telephoning and governors of two states involved, the police and FRSC did not know if the driver is to be charged or not (yes, money and connections are big things in Nigeria...and frankly, most of the underdeveloped world). So, they kept mum about it while also gathering detailed information and formal statements.
The tire burst theory is a new addition, as per the driver's statement. It is yet to be verified and ascertained that if a tyre burst did in fact occur, it was during normal driving or when they took the shoulder to overtake (undertake), as in many cases, the shoulder is not always paved or in good shape. There are no marks to collaborate with the tyre burst and loss of control theory, like screeching marks.
A very unfortunate incident. May the deceased RIP.
Building on this narration, there is a new video of interviews from eyewitnesses that corroborates what I said, but they claim that the driver did not undertake voluntarily, but because someone pulled in front of them wrongly. I am putting the video here, but this might test your "English" skills even if you're a native speaker. And don't rely on the auto-generated text because it too cannot follow and misses or changes words/context. However, it will clearly show you the appalling traffic and (lack of) rules. It's truly a free-for-all "expressway".
More specifically, look at an oil tanker parked at the same location (1:36 in the video), cars using all lanes for all speeds, including heavy trucks in the fast lane (at 1:38 in the video), people jaywalking by climbing over the center divider on an expressway (2:00 in the video), no access control meaning you can freely enter/exit, stop by a local shop, etc., cars driving the wrong way (3:16 in the video), and you can listen to the actual witness' narration (7:11 in the video). They also mention that accidents happen very frequently on that road. At 15:11, you can again see someone jaywalking even as some officials are standing there. Finally, they show some remaining pieces of the car, particularly a side bulletproof glass (15:45 in the video), which the guy says was "a very strong car".
https://www.youtube.com/watch?v=NSiQ1RA_maI