Florida police now say all four people found dead on Wednesday in the burning home of retired tennis star James Blake also had bullet wounds.

Police are speculating the incident may have been a murder-suicide and added a gun was recovered at the burning scene while the home was riddled with heavy-duty fireworks and other explosives throughout.

James Blake home destroyed by fire

Police have now identified the adult male victim as Darrin Campbell, and report the gun recovered at the scene belonged to him. The other three victims appear to be his wife and two teen children.

TMZ Sports added investigators have recovered footage of Campbell making a huge fireworks purchase at a local establishment just three days before the fire occurred. Detectives say Campbell had been out of work for at least the last year.

James Blake fire intentionally set?

The 33-year-old Blake purchased the 5,800-square-foot home in 2005 for a reported $1.5 million. A former Harvard student, Blake rose to as high as No. 4 in the world rankings and reached the quarterfinals of the U.S. Open in back-to-back years beginning in 2005.

A 10-time career title winner, Blake announced his retirement at the end of the 2013 season after netting nearly $8 million in overall prize money. Blake was awarded the Arthur Ashe Humanitarian of the Year award in 2008 and his 2004 autobiography Breaking Back: How I Lost Everything and Won Back My Life, chronicling his return to the tour from a career-threatening injury, made the New York Times best sellers list.

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