At the scene of Sunday's fatal fire. Outside 516 Elm Monday morning. One man died and nine people were displaced after a two-alarm fire at a house on Elm Street.That fire started at around 6:22 a.m. Sunday, according to New Haven Fire Department (NHFD) Assistant Chief Daniel Coughlin.Coughlin said firefighters responded at that time to a call for a ​“porch fire” at the three-family house at 516 Elm St.“When they got on scene, they had heavy, large volumes of fire on the second and third floors,” he said. They then engaged in a ​“quick, aggressive attack” of the blaze, succeeded in preventing the flames from spreading to an adjacent house, and searched the property for people stuck inside.Coughlin said that the Dixwell station’s Truck 4 firefighters came across the victim in a bedroom on the second floor. He was already unconscious, Coughlin said, and had likely ​“expired” before firefighters found him. The firefighters removed the victim from the building, and paramedics performed CPR on scene. The man was then taken by ambulance to Yale New Haven Hospital, where he was pronounced dead. The police department has not yet released the name of the victim as detectives wait for the results of an autopsy.Amidst the tragedy of a life lost, Coughlin said, city firefighters did an ​“incredible” job combating the heavy fire. ​“They saved the neighboring house.” He said it took around 50 minutes to get the fire under control. No firefighters were injured.Coughlin said that the cause of the fire is still under investigation. Because a person died during the fire, the state fire marshal will also investigate this incident. According to city land records, 516 Elm St. is owned by 56 – 58 Avon Street LLP, a holding company controlled by Bethany-based landlord Jianchao Xu.Photos from Sunday's fire, as posted to the @NewHavenFire account on X. The view on Monday.