Firefighters Wednesday morning are battling a fire at a new housing development under construction in Upland.
The blaze is located near East 9th and 13th Avenue in San Bernardino County, according to the San Bernardino County Fire Department.
Firefighters received a call around 5:24 a.m. on Wednesday, and the 3-alarm fire was burning "multiple apartment buildings," San Bernardino firefighters said.
At least 5 structures were involved in the fire. No injuries were reported. The cause of the fire is not yet known.
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More than 60 firefighters were working to put out the flames, San Bernardino Fire said in a Twitter statement. The Ontario Fire Department, Rancho Cucamonga Fire Department and Los Angeles County Fire Department were assisting San Bernardino in battling the fire.
This is a developing story. Check back for updates.