Ten people including a baby have died in a fire at an eight-storey building in south-western Paris, officials say, reports the BBC.
More than 30 people - including six firefighters - were injured. One person is in a serious condition.
Fifty people were evacuated by ladders from the blaze in the upmarket 16th arrondissement.
Investigators believe the fire - one of the most deadly in the French capital in years - was possibly started deliberately.
A woman detained earlier by police is no longer being questioned and, after undergoing medical and behavioural tests, has been admitted to the psychiatric infirmary of the Paris police, media reports quote the Paris prosecutor as saying.
Earlier, French president Emmanuel Macron said the country "had woken up to tragedy", and praised the fire services for their courage.