Fresno firefighters Wednesday morning were sent to an apartment fire on North Fresno Street near East Herndon Avenue in northeast Fresno.
The blaze at 6600 N. Fresno St. broke out just before 11 a.m., fire department spokesman Hector Vasquez said.
The northbound lanes of Fresno Street are closed from Escalon Avenue north to Herndon.
The two-alarm fire fire started in one unit and damaged three others, he said. Occupants of four units are displaced.
The cause is under investigation, and the amount of financial damage is not yet known.
This story will be updated.