Multiple People Shot in Mass Shooting at Oklahoma Campground, Three Suspects Allegedly Fled into Woods, Hospital on Lockdown, Massive Manhunt Underway (VIDEO) 

At least 13 people were injured during a mass shooting at a campground in Edmond, Oklahoma, on Sunday evening.

Multiple victims were transported to nearby hospitals, and a lockdown was imposed at one of them.

The incident unfolded late Sunday night at the Lake Arcadia campground area in Edmond.