Merger would curtail competition for grocery shoppers, Oregon court finds in a decision that could derail the deal.

Two separate rulings on Tuesday stopped the merger of supermarket giants Kroger and Albertsons in its tracks. The decisions by

A day after a federal judge delivered a serious blow to the merger, Albertsons announced Wednesday it was giving up on the controversial deal to join forces with its competitor Kroger and has filed a lawsuit, accusing the chain it failed to do enough to win government approval for the $24.6 billion agreement.