By The Thaiger
Chiang Mai News reports that the accident happened at 6pm inside the Fa Harm Underpass on Super Highway Road, northbound.
Police and emergency responders arrived at the scene to find several damaged motorbikes and five injured people. They were taken to nearby hospitals.
The motorbike riders headed into the underpass to shelter from the heavy rain, police said. However, a pickup truck entered the underpass and hit some of the motorbikes, knocking the riders onto the road.