JERSEY CITY - Two firefighters and two residents were injured in a three-alarm row home fire in Jersey City early Monday.

The fire broke out in a row home on Bergen Avenue at around 5:30 a.m. The fire quickly spread to at least two adjoining buildings.

Two homes were severely damaged by flames. A third sustained heavy water damage.

Fire officials say two firefighters were taken to a hospital with non-life threatening injuries. One received a shoulder injury and the other suffered from smoke inhalation.

Two residents had minor injuries, firefighters said.

The Red Cross has been called in to help at least a dozen residents who were left homeless as a result of the blaze.

The cause of the fire remains under investigation.