New London — Six residents temporarily were displaced Wednesday evening by a fire that began on the second floor of their home, according to city fire Battalion Chief Edward Sargent.

Sargent said the fire at 527 Ocean Ave. was called in at 5:55 p.m. Firefighters had knocked it down by 6:08 p.m.

Residents of the home, Sargent said, were alerted to the fire when a smoke detector activated. When they went upstairs to turn it off, they saw there actually was a fire in one of the home’s bedrooms, so they shut the door to the room and evacuated the house.

In part because of the residents’ quick thinking, Sargent said the fire did not spread from the room. Although there was fire damage to the room, the rest of the house suffered only smoke and water damage.

Sargent said the Red Cross responded to help the home’s six occupants find another place to stay as they await repairs.

Firefighters from New London and the Naval Submarine Base as well as Lawrence + Memorial Hospital paramedics responded to the scene.

No one was injured in the fire. Its cause remains under investigation.