Some 450 employees of a Natchitoches Parish paper mill will lose their jobs by the end of April after their parent company announced the facility’s pending closure Thursday. International Paper is shutting down its Red River Mill in Campti that makes containerboard,

The Campti facility, known as the Red River Mill, produces about 800,000 tons of containerboard annually and is the largest private employer in Natchitoches Parish.

Different types of facilities across four states will shut down by the end of April. One closure will remove 800,000 tons of containerboard capacity from IP’s network annually.