Gunmen have shot and killed at least 14 people in a crowded dance club in the northeastern Brazil city of Fortaleza, authorities say.
At least another six people were injured and are hospitalised in Fortaleza, said Andre Costa, who heads the Ceara state security secretariat, which oversees police forces.
Costa told journalists that a motive was not yet known, but authorities were investigating whether the killings were part of an ongoing fight between two drug gangs.
No suspects are in custody.
Eyewitnesses told the Globo TV network that three cars full of armed men arrived at the dance club around 12:30am on Saturday (local time) and fired rounds into the front of the building for at least half-an-hour before fleeing.
Brazil routinely has more homicides than any other nation, according to an annual United Nations compilation of violence. In recent years, homicides have increased significantly more in the country's northeast area than in the rest of the nation.