Suspected arson at Phoenix Children's Project Centre in Norwich
A charitable centre for children has been severely damaged in a suspected arson attack.
The Phoenix Children's Project Centre in Mile Cross, Norwich, has three main halls for families living in the area.
Firefighters were called out just before 22:00 GMT on Saturday after the building was reported to be on fire.
The property, refurbished after volunteers helped raise £500,000 to buy it in 2006, was empty at the time of the fire.
A fire service spokesman said the fire had caused "extensive damage".
Police have appealed for anyone who saw what happened to come forward.
A police spokesman said the fire was thought to have been started deliberately.
The centre has been sealed off and a joint police and fire service investigation is under way.