Speaking during the question hour in Lok Sabha, he said that the government was trying to have these units soon, though it was a long-term plan in view of the constraints of manpower and training.
The government has got four regional NSG hubs in Hyderabad, Mumbai, Chennai and Kolkata.
Chidambaram said, "Strengthening of the national security apparatus, including commando units, was an ongoing process, with regular reviews based on internal security situation."
The Centre would also provide assistance for raising commandos in states, apart from upgrading existing four training centres for Central Paramilitary Forces at Silchar (Assam), Hazaribagh (Jharkhand), Sapri (Himachal Pradesh) and Gawaldham (Uttarkhand), which would train the commando components of India Reserve Battalions.
"Raising of NSG hubs and commando units is not an easy matter. It is a complex exercise," he added.