Mexican police have confirmed that "at least" 5 people were killed in a shooting at the Blue Parrot nightclub in Mexico's Playa Del Carmen, CBS News reported. The gunman wounded 9 others at the club, which was reportedly hosting an afterparty for the BPM Festival early Monday morning.

"The violence began on 12th street in front of the club and three members of the BPM security team were among those whose lives were lost while trying to protect patrons inside the venue," BPM Festival organizers said in a statement on Facebook on Monday. "The BPM Festival has been working closely with the local authorities (Seguridad Publica/Policia Turistica) throughout the festival to ensure public safety and security for all visitors. 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."

Valerie Lee, U.S. Digital Editor for Mixmag, was at the venue during the shooting and reported that "at least four to five shots were fired." The shooter, according to Lee, "did not enter the venue" and police reportedly arrived more than 10 minutes after the shooting began:

Additional details were not made immediately available.

This post will be updated.