There was need to issue a look out circular against him, says the investigating agency.

Karti Chidambaram, son of former Union Minister P. Chidambaram, “tampered” with evidence relating to an alleged graft case against him during his visits abroad in May, June and July this year, the CBI alleged in the Supreme Court on Wednesday.

The CBI told a Bench headed by Chief Justice Dipak Misra that there was need to issue a look out circular (LoC) against Mr. Karti as he had the “potential” to tamper with evidence and he had done this during his visits abroad.

The CBI FIR, lodged on May 15, had alleged irregularities in the Foreign Investment Promotion Board (FIPB) clearance to INX Media for receiving overseas funds to the tune of ₹305 crore in 2007 when Mr. Karti’s father was the Union Finance Minister.

“The LoC has two purposes. First, considering the investigation, he [Karti] may not become an outlaw and second, he can tamper with the evidence outside India,” Additional Solicitor General Tushar Mehta, appearing for the CBI, told the Bench.

“I will show he [Karti] has the potential to tamper with the evidence. During May 13 to 18 and second week of June to second week of July, he went abroad and he did tamper with the evidence. I will justify this,” Mr. Mehta told the Bench, which included Justices A.M. Khanwilkar and D.Y. Chandrachud.

He said there were “contemporaneous official records” that reflected this.

“These are not statements under section 161 of CrPC, which can be obtained by pressuring somebody. These are contemporaneous official records,” Mr. Mehta told the court.

He also sought to place before the Bench some documents in a sealed cover, which was objected to by senior advocate Kapil Sibal, who is representing Mr. Karti.

Mr. Sibal also questioned the way in which the CBI was seeking to place on record certain documents in a sealed cover, after Mr. Mehta referred to legal provisions and said these empowered the probe agency to share the case diary with the court without sharing them with the accused.

Mr. Mehta told the apex court that he would seek instructions on whether the Division Bench of the Madras High Court be asked to decide the main matter pending there.

The court posted the matter for further hearing on October 9.

Last month, the CBI told the apex court that Mr. Karti was prevented from travelling abroad as he was allegedly closing several of his foreign bank accounts. The CBI’s contention was strongly refuted by Mr. Karti’s counsel.

The top court is hearing CBI’s appeal challenging Madras High Court order staying the government’s LOC against Mr. Karti in the alleged graft case.

On September 1, the CBI had told the top court that there were “good, cogent” reasons for issuing the LoC against Mr. Karti.

On August 18, the court had asked Mr. Karti to appear before the investigating officer at the CBI headquarters here for questioning in the case.

Before this, the apex court had said that Mr. Karti would not be allowed to leave India without subjecting himself to investigation in the case. The court had then stayed the high court order putting on hold the LOC against Mr. Karti.

The CBI had claimed that the FDI proposal of the media house, cleared by Mr. Chidambaram, was “fallacious”.

The FIR was registered on May 15 before the special CBI judge here and the registration of the case was followed by searches at the residences and offices of Mr. Karti and his friends the very next day.