(CNN)Chaos broke out at a zombie-themed street festival in downtown Fort Myers, Florida, after a shooting left one man dead and four other people wounded.

Crowds of festivalgoers fled screaming through the streets after the shots rang out late Saturday at ZombiCon.

“It cleared out fast and cop cars and ambulances came,” said Savannah Holden, who watched the panic unfold from a hotel balcony.

One man died of a gunshot wound at the scene, police said, and four other people who suffered non-life-threatening injuries were taken to Lee Memorial Hospital for treatment.

The identities of the victims weren’t disclosed, and the circumstances of the shooting remained unclear.

Detectives have been canvassing the area for witnesses, authorities said, asking anyone with information on what happened to call the Fort Myers Police Department.

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