A concert by Romanian metal band Goodbye to Gravity has turned tragic. At least 27 people have died as a result of an explosion at a club in the capital city of Bucharest.

CNN is reporting that the Colectiv club caught on fire during their performance, which was booked to celebrate the release of Goodbye to Gravity's new album, Mantras of War. While the official cause is not yet known, witnesses say that it was caused by the pyrotechnics used. An official investigation is already underway.

Another 180 people were injured in the fire and sent to hospitals around Bucharest. It's believed that there were 400 people inside the club, which has only one exit.

Romanian President Klaus Iohannis wrote on Facebook, "I am shocked and deeply saddened by the tragic event that occurred tonight in downtown. It is a very sad moment for all of us, for our nation and for me personally. At this painful time, I express my full compassion and solidarity with the families of those affected by this tragedy."

If the fire was the result of the pyrotechnics of the 2003 fire at The Station in West Warwick, R.I., at which 100 people were killed at a Great White concert when the fireworks ignited the soundproofing foam on the ceiling. The owners of the club and the band's road manager were convicted of involuntary manslaughter.

Nearly three years ago, the Kiss nightclub in Santa Maria, Brazil caught on fire when members of Gurizada Fandangueira lit flares onstage, leaving 233 people dead.

This Day in Rock History: October 31