Fire authorities issued evacuation orders to about 5,000 homes Tuesday as a wildfire burned through parched brush in northern San Diego County, Calif. But at least some of those orders warned of a "fire in your pants."
A county official told U-T San Diego that the origin of the strange alert was unknown, though it could have been a student or contractor with access to the app.
Authorities were investigating the odd warning Tuesday.
They were also fighting the blaze — dubbed the "Bernardo Fire" because it burned near Rancho Bernardo — which had grown to about 800 acres after starting at 10:45 a.m. The fire did not cause any serious injuries or property damage.
The fire was only 5 percent contained Tuesday evening, though its spread had been limited.
The cause of the fire was unknown. San Diego Mayor Kevin Faulconer said in a news conference he declared a local state of emergency in order to get federal reimbursement for the cost of fighting the blaze.