GRADY COUNTY, Oklahoma - Crews responded to a large fracking operation fire just east of Chickasha late Wednesday afternoon.

The Grady County Fire Department responded to HWY 62 and 39, about six miles east of Chickasha after the reported fire. Upon arrival, crews reported numerous trucks on fire.

According to a diagram News 9 received from the University of Kansas, the frack pumps caught fire and all of the trucks connected by metal piping are on fire. All 22 trucks are said to costs about $1 million each. 

Crews reported explosions as the fire fuels but it is contained in the area. 

The Oklahoma Department of Transportation said all lanes at SH 39 and County Road 2910 in Grady County, and all lanes from County Road 2940 west of HWY 62 were shut down due to the fire. The roadways were reopened about 9:45 p.m.

There was also reports of heavy amounts of smoke crossing the highway. 

"I really don't know what caused it. They were in the process of fracking a well and that's where it all started," Grady County fire spokesman Buddy Myers said.

The site belonged to Continental Resources. The company released the following statement:

"Continental Resources received a report of a fire on a continental location approximately 3 miles east of Chickasha. All crew have been accounted for and are safe. The well is shut in. The cause of fire is unknown at this time. 

"CLR safety personnel and local fire departments and have responded and are on location to protect surrounding property."

We will have more information as it becomes available. Stay with News 9 and News9.com.