The Prodigy frontman Keith Flint has died, aged 49.
In a message on the band's Instagram page, bandmate Liam Howlett said: "The news is true, I can't believe I'm saying this but our brother Keith took his own life over the weekend, I'm shell shocked, f***** angry , confused and heart broken ..... r.i.p brother Liam."
The star, famous for hits with the band including Firestarter, Breathe and Out Of Space and known for his energetic performances, was found this morning at his home in Essex.
The band said in a statement: "It is with deepest shock and sadness that we can confirm the death of our brother and best friend Keith Flint.
"A true pioneer, innovator and legend. He will be forever missed.
"We thank you for respecting the privacy of all concerned at this time."
The cause of Flint's death is not yet known.
An Essex Police spokeswoman said: "We were called to concerns for the welfare of a man at an address in Brook Hill, North End, just after 8.10am on Monday March 4.
"We attended and sadly a 49-year-old man was pronounced dead at the scene. His next of kin have been informed.
"The death is not being treated as suspicious and a file will be prepared for the coroner."
An East of England Ambulance spokeswoman said: "We were called at 8.08am with reports of a man who was unconscious in Brook Hill, Dunmow.
"Sadly a man in his forties died at the scene."
The Prodigy emerged from the underground rave scene of the early 1990s, hitting the top 10 with singles including Charly, Out Of Space, No Good (Start The Dance) and Poison from their first two albums, Experience and Music For The Jilted Generation.
Flint, who was always instantly recognisable for his spiked hair and unique style, was initially a dancer with the band before moving to sing on Firestarter and Breathe - the singles from their third album, The Fat Of The Land, which propelled them into the mainstream.
Both the singles and the album topped the charts, achieving multiplatinum sales.
Six of their seven albums reached number one, with their last, No Tourists, released in November last year, and they are estimated to have sold about 30 million records across the world.
Ed Simons, of The Chemical Brothers, is among those paying tribute, tweeting: "Oh gosh, so sad to hear about Keith Flint, he was always great fun to be around and very kind to Tom and I when we first started doing shows together.. great man."
Electronic music duo Chase and Status, who have shared festival bills with The Prodigy, tweeted: "Absolutely devastated to hear the tragic news that the legend Keith Flint from @the_prodigy has passed away.
"Our thoughts & condolences are with all his friends and family. We wouldn't be here if it wasn't for Keith and the life changing music they made and championed. RIP."