A former District police officer has admitted he provided security services for a woman who was giving women illegal silicone injections in their buttocks. Court records show that 48-year-old Martin Freeman pleaded guilty Monday in federal court in Baltimore to conspiracy to introduce a misbranded device into interstate commerce.

His partner in the conspiracy, Kimberly Smedley, pleaded guilty last month to administering the silicone injections to women who wanted to enlarge their buttocks from 2003 to 2011. She used commercial-grade liquid silicone — not an approved medical-grade product — for the injections, which women received in hotel rooms in the District, Baltimore and other cities.