Hall County authorities are investigating a deadly boat accident on Lake Lanier Sunday night.
 
Authorities say the accident involved one boat.
 
One person's body was recovered from the lake. A second person was injured and rushed to a local hospital.
 
A viewer sent Channel 2 Action News cell phone video of flashing emergency lights from Hall County on Lake Lanier. It's close to Browns Bridge Road.
 
So far no names have been released.
 
Investigators plan to shed more light into what happened when the sun comes up.