The Ankeny-based Casey’s convenience store chain Friday announced the closing of its 580-million dollar acquisition of the Bucky’s Convenience Stores. The company says the Bucky’s acquisition gives them more presence in Nebraska and Illinois, and brings their total company-owned and operated stores to more than  23-hundred.

The company says in its announcement that the  acquisition marks “the most significant transaction in Casey’s 52-year history.”

Casey’s was required to get rid of six stores as part of the consent order the agreed to with the Federal Trade Commission.