Suspected kidnappers have reportedly attacked passengers travelling along the Lagos-Ibadan expressway.
The gunmen, who launched the attack on Tuesday, were said to have been dressed in military uniforms.
The gunmen reportedly came out of the bush and started firing at passengers of an 18-seater bus on the Sagamu axis of the expressway.
The affected passengers were said to have lain flat inside the bus to avoid being hit by bullets.
In a video taken after the incident, some of the affected passengers narrated how the driver could not control the bus during the shooting.
The video also showed some of the injured passengers.
Police spokesman Abimbola Oyeyemi said the gunmen were kidnappers, adding that policemen engaged them in a gun duel.
“Some of the gunmen left the scene with bullet wounds. At the moment, our men are combing the bush to get the bodies of some of the gunmen,” he said.