People are being warned to close windows and avoid an area of Norwich after a fire broke out in a park.
Around 25 firefighters are tackling a blaze at the tennis pavilion in Heigham Park in Jessopp Road, with four crews called to the park at around 2.22pm today.
Norfolk Fire Control said: "It is a significantly large building and thatched so it will take some time to extinguish."
Friends of Heigham Park said on Facebook: "It is great sadness that the lovely tennis pavilion has suffered a fire. We do not know full details. Such a shame and we are sorry to be bearers of bad news"
Paul Seaman, group manager at Norfolk Fire, said: "The roof being thatched means it is a difficult fire to fight. The only way is to strip each thatch while containing the blaze. Crews are working very hard in difficult conditions."
He added fire crews would remain on the scene for the next two hours and will return again in the early hours tomorrow morning to monitor the blaze.
It is understood no other emergency services are on the scene but police have been informed.
The cause of the fire is unknown and investigations are underway.
No roads have been closed and no one has been injured in the fire.
Did you see what happened or do you have pictures of the fire? Email ruth.lawes@archant.co.uk
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