A massive fire tore through a nightclub in North Macedonia ’s eastern town of Kocani early Sunday, killing 51 people and injuring more than 100, authorities said

The blaze broke out while a local pop band was performing. Reports said fireworks were set off inside the venue, causing the roof to catch fire.

Fire ripped through a packed nightclub early on Sunday in the North Macedonian town of Kocani, leaving 51 people dead and more than 100 injured, after sparks ignited the roof over a live band. State news agency Mia reported that police have detained the owner of the club over the incident.