Four people have been killed at a concert held by US heavy metal band Damageplan, which was formed by ex-members of rock legends Pantera.
Damageplan have been together for more than a year and their debut album reached the US top 40.
Damageplan say their songs are "molten hard rock masterpieces"
Guitarist "Dimebag" Darrell Abbott and drummer Vinnie Paul Abbott set up the band after Pantera's acrimonious split, which saw the brothers break from singer Philip Anselmo and bassist Rex Brown.
Pantera had enjoyed a period as one of the biggest rock bands in the US, forming in Texas in 1981 and breaking through with 1988's aptly-titled album Power Metal and follow-up Cowboys From Hell.
Darrell turned down an offer to join fellow rockers Megadeth, instead leading Pantera in a style that was heavy and dark but not suffocating, and infectious and tuneful but not commercial.
Far Beyond Driven, released in 1994, was their biggest success, reaching the summit of the US Billboard album chart by offering a more aggressive alternative to the likes of Nirvana and Pearl Jam.
Pantera were one of the top metal bands of the 1990s
But they could not capitalise on that creativity and fan base, and struggled to match that achievement.
While a new generation of metal bands, such as Korn and Slipknot, carried their influence, Pantera found themselves left behind, playing to largely die-hard, older fans. They split early in the new century.
While Alemso worked with several new bands, the Abbott brothers set out with Damageplan to find a "new found power" - which became their motto and then the name of their debut album.
Pat Lachman, guitarist with Halford and Diesel Machine, wanted to try a stint being a frontman and impressed the brothers.
Darrell said: "The key was, he had that aggression, which has always been crucial to what we do, but at the same time, we love a melody."
Damageplan's debut album went to number 38 in the US
The line-up was completed by bassist Bob "Zilla" Kakaha, who played in local metal bands, and New Found Power was released in February 2004.
The album featured appearances by Slipknot vocalist Corey Taylor and Ozzy Osbourne's bandmate Zakk Wylde. They also collaborated with ex-Alice In Chains guitarist Jerry Cantrell for a song on the soundtrack to movie The Punisher.
They have been touring heavily, including MTV2's Headbangers' Ball Tour and the UK's Download festival, and at one point covered 6,000 miles (10,000 kilometres) in just 24 days.
Described by the band as a "fright-gallery of scorching, molten hard rock masterpieces", New Found Power went to number 38 in the US Billboard chart but failed to impress many beyond the heavy metal scene.