Onana, who is expected to join Inter at the end of the season on a free transfer, was travelling from the capital Yaounde to the port city of Douala, where the Indomitable Lions are gathering ahead of their World Cup play-off against Algeria.
Local media showed pictures of the car in which Onana was travelling, and another vehicle, with the front part of each being badly mangled.
Onana, 25, was taken from the crash site to the Cameroon team base and posed for pictures, appearing unhurt; however, it was determined he should head for hospital check-ups.
"Andre Onana is fine," the team's official Twitter page stated. "The Indomitable Lions goalkeeper joined his team-mates in the den in Douala this morning.
"More fear than harm for the moment after the traffic accident he suffered early this morning in Sombo on the Yaounde to Douala axis.
"Andre Onana will undergo in-depth examinations in a referral hospital centre in Douala."
Cameroon will host Algeria in the first leg of their play-off on Friday, with the second leg taking place in Blida next Tuesday. The aggregate winner will qualify for the Qatar 2022 finals.
Chelsea recorded a 2-0 win over Wolves on Sunday to secure a top-four finish in the Premier League and a spot in next season's Champions League.
That result should open the door for the arrival of Havertz – and soon.
TOP STORY – HAVERTZ TO CHELSEA SET TO SPEED UP
Chelsea's qualification for the Champions League should see a deal for Leverkusen star Havertz speed up, according to Sport Bild.
Leverkusen are in the Europa League last 16, but reportedly do not insist on keeping the Germany international for the rest of the tournament.
Havertz, 21, has scored 17 goals and provided nine assists in 43 games in all competitions this season.
ROUND-UP
- Coming out of contract at Milan, Ibrahimovic could be set to extend his stay. CalcioMercato reports the 38-year-old forward is open to accepting a deal worth around €4million, lower than his initial demand of €6m. The report also says Gianluigi Donnarumma, whose deal expires next year, could renew until 2023.
- What's next for Philippe Coutinho? The cover of Sport says the playmaker, who is on loan at Bayern Munich from Barcelona, is considering options to join Arsenal, Tottenham or Leicester City.
- Brescia star Sandro Tonali is linked with a big-money move. CalcioMercato says Inter have agreed terms with the Italy international midfielder and are nearing a €35m agreement with Brescia, while Milan are also reportedly interested in the 20-year-old.
- With Dejan Lovren reportedly set for an exit, Liverpool may have found a replacement. Sport Bild reports the Premier League champions have started talks with Schalke to sign 20-year-old centre-back Ozan Kabak.
- With uncertainty over Kepa Arrizabalaga's future at Chelsea, the Premier League club are said to be looking for a new goalkeeper. Voetbal International reports Chelsea and Leverkusen have strong interest in Ajax goalkeeper Andre Onana.
- Edinson Cavani may be close to deciding his future. Todofichajes reports the former Paris Saint-Germain striker is close to agreeing a deal with Benfica.
