Four small "suspicious" fires sparked Thursday could be connected to a string of intentionally set blazes Davis fire crews have investigated this summer.
About 4 p.m. Thursday, crews were called to a fire at 2200 N. Redwood Road in North Salt Lake that involved 25 to 30 acres, South Davis Fire District Assistant Chief Jim Rampton said.
Within the next 30 minutes, crews were called to three other fires: a 10-acre blaze at 2425 S. 2000 West, Woods Cross; a one-acre fire at 1100 W. 1800 North, West Bountiful, and a one-acre fire at 800 S. 1250 West, Centerville.
Fire investigators don't know how the fires were started but believe they were human-caused "just due to the the area of all the fires, occurring next to the road," Rampton said. "We've experienced this on a number of occasions throughout the summer."
Since June 1, crews have battled about 100 blazes throughout Davis County and 70 to 80 of those are believed to have been intentionally set, Rampton said.
"This is extremely high for us," he said.
Most of them are in the southwestern area of the county, in industrial or undeveloped areas, Rampton said.
It's believed the Davis County fires might also be related to a string of field fires intentionally set in Salt Lake City, Rampton said.
"We've been working with Salt Lake City and their investigative task force to see if there are similarities between the two and it kind of looks there is."
It's still unknown how many people are starting the fires, Rampton said.
"If it's one, he or she's got to be pretty busy," Rampton said.
Anyone with information is asked to call Davis County dispatch at 1-801-451-4151.