Boston Fire Department responded to two fires that broke out in Dorchester on Thursday morning, leaving several residents displaced.

Firefighters responded to the first blaze, at a three-decker home on Sudan Street, at around 3 a.m. The fire began in the back of the building and extended to all three floors, Boston Fire Chief John Dempsey told NBCBoston.

Four adults evacuated after the smoke detectors went off. No one was injured and the flames were extinguished.

Just a few hours later, firefighters responded to a second blaze at 252 Adams St. and were able to extinguish it before 7 a.m.