A Prince George's County realtor has been indicted by a county grand jury on charges of forging documents in obtaining a home loan from the Arlington-based Hamilton Mortgage and Investment Co.

Benjamin B. Bell, who operated Ben Bell Realty in southern Prince George's, was charged by the grand jury Wednesday in a five-count indictment involving a $28,800 loan made by Hamilton to Michael Kevin Young in June 1977 for a house in Hyattsville.

Bell could not be reached for comment.

Loans made by Hamilton in Prince George's have been the subject of a county grand jury investigation since last summer. A suit has also been filed against the company by a Clinton man who alleges that Hamilton employees falsified loan documents in order to give loans to home-buyers who could not afford the.

Hamilton officials have said that after an internal investigation of such loans three of the employes were dismissed from the firm's Marlow Heights office. The company's attorney, Kenneth Lore, has said that neither the company nor any of its officers were involved in illegal loan practices.

According to the indictment, Hamilton made the loan to Young and transferred the loan to the Federal Home Loan Mortgage Corp., which started foreclosure action against Young last May because he had failed to make payments. The foreclosure was completed and the property sold in June, court records show.