Although the details are still not completely clear, it is being widely reported that DJ Mehdi has died at the age of 34. According to this article in DJ Mag, Mehdi and some friends were on the roof of his home in Paris, celebrating the birthday of his Carte Blanche partner Riton, and the roof collapsed.
The French DJ/producer was key a member of the Ed Banger family, although he first came up as a hip-hop DJ before moving into more electro- and disco-oriented sounds.
Our sympathies go out to his friends and family.
UPDATE: Ed Banger/Because Music has released a brief official statement, which simply reads, "It is with great sadness that we announce the death of our friend DJ Mehdi. Our thoughts are with his family and loved ones."