Dozens of people were displaced by a four-alarm fire early Sunday morning in Newark, according to city officials.

The flames broke out around 1:15 a.m. on Woodside Avenue and impacted four residential buildings.

A fire captain was taken to University Hospital for a head injury, along with a firefighter who was hurt after they fell. Both have since been released.

Two adult civilians were also hospitalized and later released, according to authorities.

City officials say a total of 67 people (49 adults and 18 children) are displaced.

The Red Cross says their disaster volunteers are working with 56 of those residents.

The fire was placed under control at 6:10 a.m. Along with Newark, firefighters from Montclair, East Orange, Bloomfield and Jersey City were called in for mutual aid.

City officials say the incident is being investigated by Newark Department of Public Safety's Arson Unit.