Three more suspected Indian Mujahideen [Images] militants allegedly involved in the Delhi [Images] serial blasts and the caretaker of a house where some members of the terror module were staying, have been arrested, police said on Sunday.

A day after the Delhi police claimed to have identified 14 members of the module and arrested two of them, sleuths nabbed three others identified as Zia-ur-Rehman, Shakir Nishar and Shakeel, who were on the run since the September 13 blasts.

Seven people are still at large and a hunt is on to catch them, a senior police officer said, adding the three arrests were made from a south Delhi locality.

The police had killed two terrorists, including Atif, the 'main man' of the Indian Mujahideen and alleged mastermind of recent serial blasts in several parts of the country, in a gunbattle in Jamia Nagar on Friday morning while two others were arrested the same day.

Police also arrested Abdul Rehman, the caretaker of Batla House, where Atif and four others were staying on fake documents. The encounter had taken place in that house.

The officer said Zia and Shakeel were also allegedly involved in the July 26 Ahmedabad [Images] serial blasts that claimed more than 55 lives.

During the interrogation of Mohammed Saif and Zeeshan who were arrested on Friday, the police claimed that they told investigators that Shakeel had planted the bomb in Gaffar market in Karol Bagh.

The Delhi police had on Saturday claimed that they have uncovered the conspiracy behind the attacks in the capital and in Jaipur [Images] and Ahmedabad saying they were carried out by terrorists of Indian Mujahideen and the Students Islamic Movement of India in league with Pakistan-based Lashkar-e-Tayiba.