Both ED and CBI are investigating Chidambaram for the alleged corruption which happened under his watch. INX Media, founded by Peter and Indrani Mukerjea, allegedly received illicit FDI when he was the FM.
Chidambaram's son Karti is accused of receiving kickbacks for the same.
In August, the 74-year-old was arrested by CBI officials in a dramatic fashion from his New Delhi residence.
In the court, ED had sought 14-day custody of Chidambaram but didn't get it. The agency also strongly opposed his request for an air-conditioner but added that his family visits would be taken care of.
His family was allowed to meet him for half an hour every day. ED was also directed to get Chidambaram medically examined every 48 hours.