COMANCHE, Oklahoma - According to Lawton news station KSWO, one motorcycle driver is dead and U.S. Highway 81 north of Comanche remains shutdown after 13 motorcycles were involved in a major crash.

Troopers say the bikers were headed south toward Comanche going around a curve on the highway when a pickup truck headed north crossed the center line, striking five motorcycles.

One person was pronounced dead at the scene. Three were airlifted to OU Medical Center in Oklahoma City.

The other four injured where taken by ambulance to Duncan Regional Hospital.

Trooper Nathan Mackey was one of the first on the scene and he says this is one of the worst accidents involving motorcycles he has ever seen.

"This is the first one I have had with this many motorcycles involved. It is pretty tragic. I have had a lot of them with one or two motorcycles, to have 13 involved and five of which hit, that is the most I have ever had at one time," Mackey said.

At this point it is still unclear why the pickup went left of center. Preliminary reports say the motorcyclists were headed to the Rattle Snake Hunt in Waurika.

Troopers expect this section of Highway 81 to be closed for the next several hours.