(KMOV) -- Four north St. Louis houses went up in flames and firefighters are calling all of the fires suspicious.
Fire officials tell News 4 that all four of the fires happened within walking distance of one another and in such a short span of time that firefighters hardly had time to get back to the station before getting called out again.
The first fire happened at College and Carter around 10:00 p.m. on Sunday. When firefighters arrived on the scene they found a vacant house burning. They used a ladder truck to reach the second floor as flames filled the back half of the home.
Three hours later, firefighters were called to a house fire at Blair and Prairie. That fire happened about ten blocks away from the first fire scene and looked similar to the first. Ladder trucks sprayed water through the burnt-out roof and windows of the second story, abandoned home.
While crews were battling that blaze, another erupted in the same College Hill neighborhood. This one happened at Cowan and Hutchinson. The fire then jumped to the neighboring house, causing extensive damage at that house as well.
No one was hurt in any of the fires.
Investigators are now trying to determine what sparked the blazes and who's responsible.