Three-time Olympic gold medalist Marion Jones pleaded guilty to lying to federal investigators when she denied using performance-enhancing drugs. J

ones also pleaded guilty to a second count of lying to investigators about her involvement with a check-fraud scheme.

Jones broke down in tears as she apologized, saying she understands she has disappointed her friends, family, and supporters.

??I want you to know that I have been dishonest and you have the right to be angry with me,?? Jones said.

??I have let [my family] down.

I have let my country down, and I have let myself down.