Police attended a flat fire in St Ann’s after reports people were potentially trapped inside.
Nottinghamshire Police was called to Comyn Gardens at around 11am on Friday, February 5, but when officers arrived all residents had been evacuated from the shared flat and were accounted for.
A man has now been arrested on suspicion of arson, the force confirmed.
Detective Sergeant Nick Wood, who is leading the investigation, said: “This was incredibly frightening for those at the flat to discover their home alight after the alarm had gone off and it is incredibly lucky no-one was physically harmed.
“This is absolutely unacceptable and officers are working hard to gather the information we need.
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“However, we would like to reassure people that we don’t believe there is any wider risk to the public and we continue our inquiries and investigation into this incident.
“Officers moved quickly to track down and arrest a 28-year-old man this morning (Saturday, February 6) in South Yorkshire on suspicion of arson.
“He remains in police custody in Nottinghamshire.”