A seventh correctional officer from a Maryland-run detention center pleaded guilty Tuesday to helping members of the Black Guerrilla Family prison gang run drug-smuggling and money-laundering operations from behind bars.

Kimberly Dennis, 26, admitted smuggling prescription pills and other drugs into the Baltimore City Detention Center, where she had worked since 2006. Dennis, of Baltimore, also said in court papers that she had personal and sexual relationships with two inmates who were members of the Black Guerrilla Family, the state’s largest prison gang.

Dennis was among the 13 correctional officers arrested and charged with racketeering last spring. Three inmates have also pleaded guilty in the alleged scheme, including ringleader Tavon White, who prosecutors said impregnated four of the guards.

Dennis is scheduled to be sentenced Jan. 24 before U.S. District Judge Ellen L. Hollander.

The office of Maryland U.S. Attorney Rod A. Rosenstein said the investigation is continuing.