Updated

Two men have pleaded guilty to conspiracy charges in connection with a ring that forced teenage girls to work as prostitutes in several states, including Massachusetts, Maine, New Jersey and Pennsylvania.

Shaun Leoney and Aaron Brooks were among six men who were indicted in 2007 for participating in a Boston-based prostitution ring that operated from 2001 to 2005.

Leoney, of Boston, and Brooks, of Quincy, were originally charged with conspiracy and transportation for prostitution. Leoney was also charged with sex trafficking of children.

Both men pleaded guilty Tuesday to a single count of conspiracy. Brooks reached a plea deal with prosecutors, who will recommend a sentence of four years. Leoney faces a maximum of five years in prison.

Sentencing for both men was scheduled for Dec. 15.