Four former members of a now-disbanded Chicago police unit have admitted they used to barge into people's homes and steal money.

Three of the four pleaded guilty Friday in Cook County court to felony theft and one pleaded guilty to felony official misconduct. All four were sentenced to six months in jail and promised to cooperate in an ongoing investigation.

The four say they once withheld insulin from a diabetic man until he told them where his cash was stored. They say they used to stop Hispanics driving nice cars, take the keys and illegally search the motorists' homes.

The elite unit was disbanded about two years ago amid allegations its members were involved in crimes, including home invasions, kidnapping and murder-for-hire.