The Enforcement Directorate on Wednesday arrested former finance minister P. Chidambaram at Tihar jail in connection with its probe in the INX Media case, officials said.

They said the ED investigating team followed the procedure after a local court in New Delhi on Tuesday allowed it to interrogate the senior Congress leader and arrest him, if necessary, in this case.

The agency has sought 14-day custodial interrogation of the senior Congress leader.

Investigators of the central agency, who arrived at the jail around 8:15 am, were present in the premises for about two hours.

They briefly grilled Chidambaram and arrested him under the Prevention of Money Laundering Act (PMLA).

The central agency will now move court to seek his fresh custody, they said.

Chidambaram, 74, was arrested by the CBI on August 21 and is lodged in Tihar jail under judicial custody in the corruption case.

The ED has filed a criminal case under the PMLA to probe alleged irregularities in the grant of FIPB approval to INX Media group.

Meanwhile, sources have said that the CBI is all set to file a chargesheet in the INX Media case in which it is likely to name Chidambaram and his son Karti.

The agency might also name senior government officials who were part of the decision-making process related to foreign investment clearance given to INX Media, promoted by Indrani Mukherjea and Peter Mukherjea, they said.

Indrani, who is facing charges of murdering her daughter in a separate case, had turned approver and is likely to be a prosecution witness in the CBI chargesheet in the corruption case, they said.

At Tihar jail, Chidambaram's son Karti and wife Nalini were seen in the morning.

Karti is also an accused in the case and has been arrested by the CBI in the past.