A fire at a hotel Sunday morning caused damage to three rooms and left three occupants displaced.

Nashua Fire and Rescue said they responded to the Temple Street Hotel at 23 Temple St. at about 9:30 a.m. after an alarm was activated.

Upon arrival, they discovered there was a fire in one of the rooms within the rooming house and smoke showing from a third-floor window in the rear of the building.

Officials said a fire sprinkler was activated that helped keep the fire contained to the room of origin until they could completely extinguish it.

The room of origin and two rooms below suffered significant water damage, and three occupants were displaced. Officials said no injuries were sustained during the blaze.

The cause of the fire remains under investigation.