After leaving the hospital on Wednesday, the Briton visited the funeral home where the bodies of his friends were “being prepared for repatriation”, the joint statement added.
Earlier, Eddie Hearn, who has promoted Joshua since he turned professional after winning gold at the 2012 Olympics, paid tribute to Joshua’s close friends and team members.
“Rest in peace Latz and Sina,” Hearn posted on Instagram.
“Your energy and loyalty among so many other great qualities will be deeply missed. Praying for strength and guidance for all their family, friends and of course AJ during this very difficult time.”
Ghami was Joshua’s full-time sport and exercise rehabilitation coach and worked with him for more than 10 years.
Speaking to the BBC on Wednesday, Ogun State police spokesperson Oluseyi Babaseyi said “investigations are still ongoing” and described the process as “still discreet”.
The Traffic Compliance and Enforcement Agency (TRACE) in Ogun state, where the accident occurred, has said preliminary investigations showed the vehicle had burst a tyre before crashing into the truck.
Joshua, who was born in Watford to Nigerian parents, was on holiday in Nigeria after his win over Jake Paul in Miami on 19 December.
Earlier, Toney Bellew, the retired cruiserweight world champion, posted on X: “Thoughts and prayers to the families of these men. Tragic losses in horrific circumstances!
“I hope he (Joshua) is able to process this with time because there is no pain in life worse than grief.”
Two-time undisputed heavyweight champion Oleksandr Usyk and British former heavyweight champion Tyson Fury also posted Instagram stories to offer condolences.
