Indonesia’s local band Seventeen were entertaining the crowds when suddenly a massive wave struck the stage where they’re performing.

In the video shown above, it appears that everything was normal until tsunami hits the place without warning.

According to ABS-CBN news, the event was an end-of-year party where an estimated 200 employees and their family members of state electricity utility Perusahaan Listris Negara (PLN) were at Tanjung Lesung beach when the tsunami struck last Saturday.

There are at least, 168 people died in the tragedy and hundreds got injured. Also, according to the reports, the number of death toll is expected to spike in the next few days.

Several members of the Seventeen band are on that list who lost their lives.

Bassist M. Awal “Bani” Purbani, road manager Oki Wijaya, guitarist Herman Sikumbang and crew member Ujang. The band drummer is currently reported missing.

“We were shocked because a lot of the people who went there took their families,” manager for the band Yulia Dian said.

“They’d been sharing stories they were having fun at the beach and we didn’t expect this.”

Several news outlets are pointing to the eruption of the Anak Krakatau volcano is the cause of the incident.

An underwater landslide had triggered the tsunami and brought high waves to the land especially close to the shorelines.