A gunman opened fire at the BPM Festival in Playa del Carmen, Mexico claiming the lives of four people and wounding twelve others, according to a statement on the festival’s Facebook page.

The shooting occurred outside the Blue Parrot nightclub in Playa del Carmen. Three members of the BPM security team were among those killed and the festival is working closely with local authorities to ensure the safety of those currently attending the festival.

“We are overcome with grief over this senseless act of violence and we are cooperating fully with local law enforcement and government officials as they continue their investigation,” the statement also read.

BPM Festival is mainly an electronic music festival that attracts 70,000 people each year.