Amit Jogi, former Chhattisgarh chief minister Ajit Jogi's son arrested in connection with the murder of a Nationalist Congress Party leader, was on Saturday sent for six days in the Central Bureau of Investigation's custody.
A Delhi court accepted the agency's plea that his interrogation was required to unearth the conspiracy behind the crime.
After hearing a two-hour argument, Metropolitan Magistrate V K Khanna remanded Amit till July 8, with the CBI seeking time to recover weapons and investigate money transactions.
The CBI, which plans to take Amit to Raipur, where the crime took place, and other parts of Chhattisgarh, also proposes to subject him to lie detector and other scientific
The CBI arrested Amit on Friday after he was questioned for five hours in connection with the murder two years ago.
The CBI had initially requested 14 days custody of the accused.
The defence fiercely opposed this saying there was nothing much to be investigated at this stage with all the co-accused arrested and most of the recoveries made.
Asked for his comments by the huge posse of waiting media persons while being whisked out of the court, Amit said "I will speak out at an appropriate time".