Four Arkansas residents were seriously injured Saturday evening in a single-vehicle crash near the Float Camp Picnic Area, just north of Doniphan, Missouri, according to the Missouri State Highway Patrol (MSHP). The incident occurred around 5 p.m. on August 29 along National Forest Service Road 3210, approximately five miles north of Doniphan. Authorities said a 20-year-old man was driving a passenger car westbound when the vehicle veered off the road and struck a tree. The driver and two passengers sustained serious injuries and were flown to a hospital in Memphis, Tennessee, for treatment. Another passenger, who was also seriously injured, was taken by EMS to a nearby hospital for medical care. No further details about the crash or the condition of the individuals involved have been released at this time. The Missouri State Highway Patrol continues to investigate.