The Colonial Pipeline, which was the subject of a major hack in early May, was sued on Monday for negligence after the security breach strained thousands of gas stations throughout the East Coast.

On May 7, operations at the pipeline were halted by a ransomware attack from the criminal enterprise DarkSide and later restored after executives shelled out approximately $4.4 million to the hackers days later. The North Carolina-based gas station EZ Mart 1 alleged top brass at the pipeline acted negligently and caused lasting damage to upward of 11,000 fuel retailers, according to a complaint filed in Georgia federal court.