Firefighters have extinguished a large marsh fire in the north end of Kingston, Ont. close to Highway 401.

There were no injuries or reports of property damage from the blaze, which caused traffic delays and halted train traffic for a time. Kingston Fire and Rescue Services are still investigating the cause.

Fire services started getting 911 calls about the fire just after 4:30 p.m. The flames broke out in the marsh near Montreal Street and Highway 401.

All train traffic through Kingston was stopped while firefighters battled the flames.

The flames spread quickly and by 7 p.m., they covered an area about the size of one square kilometre.