One man has died and dozens of people have been told to leave their homes following a large fire in Willenhall in the West Midlands, police have said.
Emergency services arrived shortly after 2am to find several flats on fire at a block in Southey Close.
Police said the flames appeared to have spread to the building from a wheelie bin.
Several residents had to be rescued from the flats and around 50 were asked to leave their homes because of safety concerns.
One man was found collapsed inside the building and was pronounced dead at the scene. He is yet to be identified.
A 20-year-old man has been arrested on suspicion of committing arson with intent to endanger life.
Later police were called to another fire, which also appeared to have been started in a bin, in Wychbold Way, a few hundred yards away. Nobody was injured there but some had to be rescued.
At 2.45am a third fire was spotted by officers on patrol in nearby Crab Lane, where bushes had been set on fire.
Detective Inspector Warren Hines said: "We have launched a full investigation into the series of events this morning, which resulted in the death of a man in one of the fires.
"At this early stage he is yet to be identified and we are in the process of locating his family."
Police are urging anyone with information to call 101 or speak to Crimestoppers anonymously on 0800 555 111.