Gardaí are investigating a suspected arson attack at a house in Drogheda, Co Louth.
It happened at a house in St Finian's Park in the town shortly after 2am.
A man in his 50s was taken to St James Hospital in Dublin for treatment.
A woman in her 40s and a teenage girl were taken to Our Lady of Lourdes Hospital in Drogheda.
No arrests have been made but investigations are ongoing.