Story highlights The dead include people from Mexico, Canada, the United States and Italy

"Everyone started screaming and running," a witness says

(CNN) Gunfire erupted early Monday at a club in Playa del Carmen, Mexico, leaving at least five people dead and more than a dozen others injured, officials said.

The dead included one US national, a Canadian, an Italian and two Mexican nationals.

The shooting broke out at an electronic music festival that had drawn visitors from around the world to the beach resort city.

Video of the aftermath posted on social media showed frantic clubgoers rushing into the street as rescuers arrived.

Caos en las calles de playa del carmen. NO SALGAN. Chaos on the streets. STAY SAFE. #blueparrot #bpm pic.twitter.com/ZHJZRq7PD3 — Pipe Llorens (@pipellorens) January 16, 2017

Canadian Kirk Wilson, a safety supervisor for the festival, and Daniel Pessina, from Italy, a BPM staff member, were among the dead. Rafael Antonio Penaloza, from Mexico, died at a hospital and another Mexican, Geovanni Francisco Ruiz Murillo also died in the incident.

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