A few days later, the monitor was transferred to Washington, D. C. and used to temporarily incarcerate some of the suspected conspirators after the assassination of President Lincoln. She was decommissioned in June and recommissioned in early 1869 for service in the Caribbean and off the coast of Florida. "Saugus" was again recommissioned in late 1872 and generally remained active until late 1877. She was condemned in 1886 and sold for scrap in 1891.