TPG Growth has acquired PJ United from private equity firm the Halifax Group.

Birmingham, Ala.-based PJ United operates 155 Papa John’s Pizza locations in 10 states: Alabama, Illinois, Louisiana, Mississippi, Missouri, Tennessee, Teas, Ohio, Utah and Virginia. PJ United expects TPG’s investment to allow it to grow through making additional acquisitions.  Terms of the deal were not disclosed.

TPG Growth, headquartered in Fort Worth, Texas, is the middle market investment arm of private equity firm TPG. TPG Growth has $3.6 billion in capital under management. The firm is invested in 3 Day Blinds, Eden Springs Ltd. and Schiff Nutrition International.

Washington-D.C.-based Halifax is a middle market private equity firm that invests between $10 million and $50 million in deals. The firm is currently invested in Animal Supply Company LLC, Envision Pharma Group and Interim HealthCare