A man died in a fire at a house where cannabis was being grown, police have said.
The fire in a house in Harehills Lane, Leeds, in the early hours of the morning also damaged neighbouring properties.
The man was treated by firefighters and paramedics but died at the scene, West Yorkshire Police said.
A 28-year-old woman has been arrested on suspicion of manslaughter, the force said.
She was also arrested over the production of cannabis after the remains of a cannabis growing set-up were found, said police.
A post-mortem examination is due to be held to establish the cause of his death.
Det Ch Insp Jaz Khan said the cause of the fire was yet to be established and specialist fire investigators were at the scene.