Police say a train collided with a pickup truck during heavy rains in northern Thailand, killing seven construction workers in the truck and seriously injuring another.

Police Lt. Col. Kumkaew Suyati says the train crashed into the truck Tuesday at an unguarded railroad crossing in Saraphi district in Chiang Mai province. He said the heavy downpour could have prevented the truck driver from seeing the oncoming train while crossing the tracks.

Kumkaew said five men and two women were immediately killed and another man was seriously injured.

He said the Chiang Mai-Bangkok train was not damaged and was able to continue the trip after a brief stop.

Chiang Mai is the second largest city in Thailand and is a popular tourist destination.