A man is being questioned by detectives following a suspected arson attack in Barry.
Emergency services were called out to a fire near the former O'Brien's pub on Holton Road at around 2am on Friday morning.
South Wales Police said a 37 year-old local man was arrested on suspicion of arson with intent to endanger life and remains in custody.
The fire was brought under control in just under four hours.
A South Wales Fire and Rescue Service spokesperson said: "Crews, three appliances and two water bowsers from Barry, Penarth and Maindee attended the scene of a fire involving a mixed-use commercial and domestic three-storey property with basement."
"Four breathing apparatus, two hose reel jets, one covering jet, two short extension ladders, and cutting gear were used to extinguish the fire. All persons were accounted for."

Former Holm View Leisure Centre could become education and community hub
ScoutsCymru members represent Wales at Royal Albert Hall Festival of Remembrance
Plans for indoor market at former Barry Wilko move forward
Police given additional powers to deal with anti-social behaviour in Barry
Senedd passes supplementary budget with £60m boost for additional learning needs
Future of planned festive events in question after criminal damage to Barry Town Hall
Consultation to open on plans for 35MW solar farm near Penarth
No Trains through the Vale of Glamorgan this Sunday
Police and Cardiff City launch operation to tackle matchday anti-social behaviour
Free leaf and fallen fruit collections return in the Vale
Barry retains Fairtrade Town status until 2029
£1m improvements planned for Pencoedtre Park as splashpad work set to begin
Plan submitted for new independent school on site of well-known charity farm
Is your hot water bottle safe?
Solicitor sentenced for defrauding Cancer Research UK
Cate is crowned champion!
WATCH: Winner of The Voice UK Cate McHugh duets with Sir Tom Jones
Barry filmmaker takes her documentary to the big screen in New York
Pupils leave their mark on new school at steel signing event
£3m refurbishment plans revealed for Cowbridge Town Hall