SHREVEPORT, La. — Officials in northwest Louisiana plan to hold a news conference Tuesday to release more details about the deaths of six teenagers who drowned in the Red River after stepping off a ledge from shallow water into a chasm about 20 feet deep.

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

A seventh person, a 14-year-old, was rescued.

Sanders says the teens had started playing in a familiar area but ended up at a spot in the river where the bottom fell suddenly and that's where divers found the bodies.

The victims' names were not immediately released while officials made sure relatives had been notified.