A man in his 50s was pulled from a burning building in Sompting by four members of the public who were passing by.
The rescue follows reports of an explosion at a house in Hillrise Avenue, today at 4.15pm.
The man was taken to the Royal Sussex County Hospital in Brighton. It is not known what injuries he has at this stage. No one else was injured and no one was evacuated.
The road was closed with the junction of Hillbarn Avenue while West Sussex Fire and Rescue dealt with the fire, which is now out.
Three fire pumps are at the scene.