Kalmadi, who was arrested on Monday by Central Bureau of Investigation for alleged financial irregularities in the granting of contracts for the October 2010 sporting event, spent the night in CBI lockup.
As the Congress MP was walking to the court, the man, first tried to break the police cordon and, when he failed, chucked a slipper.
Kalmadi looked a bit taken aback, but was immediately rushed into the courtroom by escorting policemen.
Thakur, wearing a T-shirt, was whisked away to the Tilak Marg police station.
Image: A man hurls a slipper at sacked CWG Organising Committee chairman Suresh Kalmadi (R) while he is escorted to Patiala House court in New Delhi on Tuesday, April 26, 2011. (Photographs copyright PTI)