McCLAIN COUNTY, Oklahoma - Authorities have shutdown southbound Interstate 35 just before Purcell due to an injury crash.

It is unclear how many vehicles were involved. A medical helicopter was requested to transport one person, only identified as a 40-year-old white male, from the scene with severe head injuries. It is unclear if anyone else was injured.

Traffic is being diverted at mile marker 98 due to the crash. The cause of the crash has not yet been determined.

Keep checking with News 9 and News9.com for more information.