The Centre will soon relocate Lt Gen (Retd) K S Brar, who survived an assassination attempt in London, from Mumbai to an undisclosed location and upgrade his security.
Reviewing the security of Brar, who had led the Operation Bluestar against Sikh militants in Golden Temple in Amritsar in 1984, Union Home Ministry officials said no communication had been received from the Army about his travel plan.
The officials said an immediate need was felt for relocating the Army official as his present location had been exposed to Khalistani terrorists.
The security of Brar, who was Major General during the Operation Blue Star, is also likely to be upgraded to Z-plus category from the existing 'Z' category.
78-year-old Brar and his wife were attacked by four youth near Hyde Park in London on Sunday night.
There has been a spurt in the activities of Khalistan terror groups like Babar Khalsa International in the recent past abroad and intelligence agencies suspect the plot to attack the highly-decorated officer was planned in Germany.
"There have been reports that the attack on Gen Brar was planned in Germany on June 6 on Bluestar operation anniversary. We are ascertaining the facts," a security official said.
Last month, Intelligence Bureau chief Nehchal Sandhu had said that due to the external support, "terrorist groups, including those focusing on Punjab and neighbouring states, are likely to pose a challenge.
Home Ministry officials said it has not received any communication from anyone about Brar's travel plan indicating that there was a communication gap.
The retired Army officer had said he had informed the army authorities in Mumbai about his trip to London.
New Delhi is yet to receive any report from London on the attack on Brar.
Last month, Minister of State for Home Jitendra Singh had said Pakistani intelligence agency ISI has been providing patronage and assistance to various Sikh terrorist groups, including Babbar Khalsa International (BKI), to revive militancy in Punjab.
"Available inputs indicate the patronage and assistance provided by Pakistan's ISI to leaders of various Sikh terrorist groups, including BKI, based in Pakistan," he had told Lok Sabha.
He said interrogation of arrested Sikh militants revealed that short-term modules are being run in Pakistan for training gullible Sikh youths from India and abroad.
Sources said it had inputs that BKI chief Wadhawa Singh was making efforts to destabilise Punjab. There have been inputs which suggested that Jagtar Tara, one of the three assassins of Punjab Chief Minister Beant Singh who is absconding following his escape from a Chandigarh jail in 2004, was playing an active role in trying to revive militancy.
Groups such as Khalistan Commando Force (KCF) and Khalistan Zindabad Force (KZF) are also working to make an impact in Punjab.
Meanwhile Maharashtra government said it will beef up the security provided to Lt Gen K S Brar (retd).
"We will step up the security cover given to Lt Gen K S Brar. The security will be as much as required," Maharashtra Home Minister R R Patil told reporters on the sidelines of a function here.
Patil added that the state government had provided protection to Lt Gen Brar (retd) in the past as well.
Brar had led Operation Blue Star to flush out pro-Khalistan Sikh militants from the Golden Temple in 1984.
After their arrival here today, Brar, who had a bandage on his neck and cheek, and his wife were escorted to their vehicle amid tight security.