Question marks remained on the identity of bombers who triggered three serial blasts in Indian capital killing 61 and injuring about 210, though a militant group in India-controlled Kashmir had claimed responsibility.

Inqilab, also known as Islami Inqualabi Muhaz, that claimed to have triggered the serial blasts, has links with Lashkar-e-Taiba, a separatist group in India-controlled Kashmir, Monday's The Hindu quoted a senior police officer as saying.

The police are verifying the claim, the officer said.

However, the Indo Asian News Agency also reported that the group's spokesman, Ahmad Yar Gaznavi, had once acted as a spokesman of the hardline Al Badr Mujahideen in January 2003. He had then threatened that his group had formed a suicide squad to target the Kashmir police chief.

According to the police, Inqilab was founded in 1996 but had not been active over the past few years.

The militant group, little known before the blasts, called the Kashmir News Service on Sunday in Srinagar, summer capital of India-controlled Kashmir, claiming they triggered the serial blasts.

The Delhi police also carried out an intensive operation to track Pakistani nationals that came to the city illegally.

"We have people coming in our cities from different countries and we will look into why and when they come," said Indian Home Minister Shivraj Patil.

Meanwhile, security forces installed three close circuit TVs to record round-the-clock the movement of people along the exit and entry points at a main checkpost along the border with Bangladesh, indicating that the police also pointed suspicion to other directions other than India-controlled Kashmir.

Source: Xinhua