Updated 3:10 p.m. ET, on Nov. 10, 2013
TEMECULA, Calif. Officials say the explosion of a hot air balloon in Southern California wine country left four people hospitalized, one with severe burns.
The Riverside County Fire Department says the balloon was carrying five people when it went down Saturday morning in vineyards near Temecula.
A spokesperson for the fire department said the balloon landed uneventfully, and that after it landed the explosion occurred.
Fire officials say one person was severely burned. Two others had serious injuries, one had minor injuries and one person walked away safely.
Names and details about those on board were not immediately released.
The National Transportation Safety Board is investigating the incident.
Hot air balloons often dot the sky on weekends in the area 60 miles north of San Diego.