A two-alarm fire near downtown Fresno blocked Tulare Street early Friday.
The fire was reported about 6:30 a.m. in the 3300 block of Tulare Street, where firefighters found an apartment in flames with heavy smoke erupting from the building, spokesman Pete Martinez said.
A call went out quickly for more firetrucks as the incident was upgraded to a two-alarm blaze. Firefighters prevented the blaze from spreading to a nearby building.
Westbound traffic on Tulare Street was routed through neighborhood streets, snarling the morning commute for those who work downtown.
Martinez said first responders saw someone who may have been running away from the vacant building and a fire investigator was called in. Firefighters have responded to a least one fire at the building before.
The cause and the amount of damage is under investigation.