Antitrust experts say a few core issues prompted the judges to say no the merger, ultimately dooming the deal.

Albertsons is giving up on its merger with Kroger a day after it was rejected in two courts and it is suing the chain, saying it didn’t do enough to secure regulatory approval of the $24.6B agreement.

In an historic ruling for labor and antitrust advocates, a federal judge blocked the $25 billion merger of grocery giants Kroger and Albertsons.