Four dead after blaze at tennis star's mansion

A family of four have been killed in a fire at a mansion owned by US tennis star James Blake.

Police in Florida said the blaze – in an upmarket development north of Tampa where many sports stars and executives live – was intentionally set.

Hillsborough County Sheriff’s Colonel Donna Lusczynski said two adults and two teenagers were killed in the mansion.

Blake was not home at the time and was renting the house to the family.

Four dead in blaze 'started by fireworks' at house owned by tennis star James Blakehttp://t.co/rd9f2ezbzD pic.twitter.com/4HkOB4ipIx

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Ms Lusczynski said the scene was “unusual” and added that officials do not yet know how the fire was started.

She added that there were “various fireworks” throughout the home and that two of the bodies appeared to have “upper body trauma”.

Authorities say the bodies have not been positively identified.

Blake, who retired last year, is believed to live at his main home in Connecticut.