Ahead of his upcoming UFC return, former light-heavyweight champion Quinton “Rampage” Jackson is being sued by Bellator, for leaving while under contract, and fighting for the UFC.

Rampage is scheduled to make his UFC return at UFC 186 next month, against Fabio Maldonado.

The former UFC light-heavyweight champion last fought for Bellator last May when he bested “King Mo” at Bellator 120.

Bellator officials released the following statement to BJPENN.COM:

“Today, Bellator MMA was compelled to go to court to stop Quinton “Rampage” Jackson from fighting in an April 25th bout promoted by Bellator’s competitor, Ultimate Fighting Championship (UFC). Jackson, who has completed only three fights of his exclusive six-fight contract with Bellator, is barred by contract from fighting for any promoter other than Bellator. Our lawsuit for an injunction and related relief – filed in the Chancery Division of the Superior Court in Burlington County, New Jersey – will compel Jackson to honor his contractual agreement. We look forward to having one of our MMA stars fighting for Bellator again.”