Keystone Agency Investors, a new strategic partnership formed by Keystone Insurers Group and Bain Capital Credit, announced the acquisition of The Seltzer Group, a custom insurance solutions provider serving Eastern Pennsylvania.

Terms of the deal were not disclosed.

Founded in 1948 and headquartered in Orwigsburg, The Seltzer Group is an independent insurance agency offering insurance products that include workers’ compensation claim management, risk management programs, disaster recovery services, health and wellness programs, human resources consulting and benefit portfolio financial planning programs. Seltzer also offers a full line of personal insurance products.

Keystone Agency Investors, which launched in July, said The Seltzer Group marks its third acquisition.