Louisiana ? Six teenagers from at least two families drowned in the Red River in northwest Louisiana after they stepped off a ledge from shallow water into a chasm about 20 feet deep on Monday, fire officials said. A 14-year-old was rescued.

Shreveport Assistant Fire Chief Fred Sanders said he believed the victims, ages 13 to 18, included three brothers in one family and a sister and two brothers in another.

Sanders said names may be released today, after the department is sure relatives have been notified.

The teens had started playing in a familiar area but ended up at a spot in the river where the bottom changed elevation suddenly.