An investigation is taking place following a suspicious fire at a leisure centre.

Police and firefighters were called to Cygnet Leisure Centre, Old Perry Street, Northfleet, just after midnight today.

The blaze was located in an office next to the gym. Firefighters had to force entry wearing breathing apparatus to tackle the flames.

Scroll down for video

A spokesman for the fire service said: “It is only a small room but it was well alight. There was some damage to the neighbouring hallway and the gym. There is a lot of expensive equipment in there so the fire caused a lot of damage.”

The cause of the fire is now being investigated. Police remain at the centre this morning

The gym is owned by Gravesham Borough Council. A keyholder and manager were alerted to the blaze and attended the site in the early hours.

Video: An investigation has been launched after a fire at a leisure centre

The centre is closed today.

A spokesman for council said: "No-one was in the building at the time of the blaze and the leisure venue is currently closed.

"Gravesham Community Leisure Limited (GCLL) and Gravesham Borough Council are currently working with Kent Fire and Rescue Service and Kent Police to investigate the cause of the fire.

"Cygnet Leisure Centre will be closed until further notice and we will be working with GCLL to partially open the centre within the next week or so.

"We apologise for any inconvenience caused and it is hoped to get as many of the facilities open at Cygnet as soon as we can.

"In the meantime, Cascades Leisure Centre in Thong Lane, is open as usual Monday to Friday 6am – 10pm, Saturday 8am – 6pm and Sunday 8am – 8pm."