WARREN (Update May 4, 2026, 3:15 p.m.) — Fire Marshal’s Office investigators have determined a cause for the April 30, 2026 flames in a converted Warren farmhouse believed to be the oldest structure in the oldest incorporated section of town. Three people were transported to a local hospital after area firefighters and ambulances arrived on scene.

All occupants of the 3-unit apartment house were home at 6 a.m., Thursday morning, when smoke and flames were initially spotted and reported. They evacuated on their own, according to the Fire Marshal’s Office.

Most of the damage was contained to the apartment where the fire started, according to Fire Chief Greg Andrews in a previous release of information. It was from that apartment that three occupants were transported by to Pen Bay Medical Center. According to the investigation, one female suffered minor smoke inhalation.  A second female, who exited by jumping from a second-floor window, sustained minor injuries from the jump, and one male suffered from smoke inhalation and was later transferred to Maine Medical Center for further treatment. All injured victims have been released from the hospital.

The origin of the fire was determined to be the first-floor living room, specifically the couch, according to the FMO.

“The cause of the fire is believed to be the careless use of smoking materials,” said the investigators.

UPDATE: Area firefighters battle early morning fire at Warren apartment building 

WARREN (Update 2:35 p.m., April 30, 2026) — Three people were hospitalized as the result of a Thursday morning, April 30, 2026, structure fire in a three-unit apartment house in Warren; firefighters did save six cats.

The Fire Marshal’s Office continues to investigate the cause and circumstances of that fire, which started in Apartment 1 of 288 Main Street, according to Fire Chief Greg Andrews.

Warren FD and mutual aid were alerted to the address at 6:04 a.m. The day’s heavy rainfalls had not yet begun when the flames were first noticed by occupants, though the precipitation was soon to follow as firefighters made their way from Warren, Waldoboro, Union, and Thomaston. A fire hydrant in front of the house was put to use, and Andrews estimates that approximately 20,000 gallons of water were sprayed onto the flames.

Warren Ambulance and two Waldoboro EMS rigs transported the patients to the hospital. Union Rescue covered the scene during the absence of Warren EMS.

Main Street stretches from Western Road to Oyster River Road and crosses a bridge. Some incoming fire apparatus arrived from Western Road while other appartus were directed to come in from the Oyster River Road side.

Reach Sarah Thompson at news@penbaypilot.com

Area firefighters battle early morning fire at Warren apartment building 

WARREN (April 30, 2026, 10 a.m.) — Firefighters battled a fire that broke out in a two-story apartment building at 288 Main Street, in downtown Warren, next door to the library.

At least one occupant was injured while trying to evacuate the structure fire, which was reported to Knox Regional Communications Center just after 6 a.m., Thursday, April 30, 2026. At least one caller to 911 reported that a woman had jumped from a second story level in order to escape. Warren Ambulance transported one person to MaineHealth Pen Bay Hospital. Ultimately, Warren EMS requested two more ambulances to the scene; Waldoboro brought two ambulances and Union Ambulance staged at the scene as an on-site resource for firefighters until Warren Ambulance was able to return. 

Warren Fire Department was assisted by firefighters from Waldoboro, Thomaston and Union. The last firefighters to leave the scene returned to their station at 10:40 a.m.

This story will be updated when more details become available.