BAKERSFIELD, CA - With fire season in full effect, county firefighters say the community needs to be alert.
Already, county and city firefighters have had a busy week, putting out three fires in the Kern riverbed since last weekend.
But, fire officials say with more fires in the area, investigators still aren't sure if it's arson.
The investigation continued Friday into how two fires spread so fast through the Kern riverbed Thursday.
"They're going to look at every single portion of that fire to find out where the starting point was," said Anthony Romero, Kern County Fire Department.
Firefighters battled the first fire around 2 p.m. Thursday. It burned about 20 acres west of the Manor Street bridge, threatening horse stables at homes in the area.
"It's a concern because the grass, the brush, trees are all dried out and it doesn't take much when we have low humidity to start a fire," said Romero.
Shortly after the first fire, another fire started in the riverbed near the Bakersfield Heart Hospital.
That's where arson investigators detained a man. Fire officials told 17 News Friday afternoon he was released and is no longer a person of interest.
Residents near the river have their own suspicions of who's starting these fires.
"We think because of the homeless people who live on the river, who've been cleared out and they've been moving this way. I was told earlier that maybe one of those has just been setting fires because they're mad at whoever is making them evacuate," said resident Gary Watt.
Firefighters say with several fires in the riverbed this week, it concerns them.
"We have a lot of people in the riverbed. There's areas under the bridges where people like to stay out of the sun. Some of them live down there so the safety concerns for us is key," continued Romero.
Since fire officials still don't know if these fires are arson, officials are reminding everyone, if they see something suspicious to report it.
If you have information, contact the fire tip hotline at 1-877-FireTip.
Firefighters say it's also important to clear dry brush away from your home to help prevent a bigger fire.