Claiming a major breakthrough in last week's serial blasts in the national capital, Delhi [Images] Police on Saturday said two of those arrested after Friday encounter have confessed to their involvement in the terror act having planted explosives in two places.

'Not many Hindu organisations involved in blasts'

Acting on a tip off, police on Friday night arrested a suspected militant Zeeshan from the premises of a news channel where he had gone to give an interview. With his arrest, police had caught two militants allegedly involved in the blasts.

Investigators are on the look out for at least ten people who planted bombs following the 'disclosure' by Mohammed Saif, who was arrested after a fierce encounter in south Delhi in which two other suspected militants were killed, a senior police official said.

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The official claimed that Saif had confessed to his role in the Delhi serial blasts, which claimed over 20 lives and that he planted a bomb near Regal Cinema in Connaught Place.

The bomb was defused after it was spotted by a ragpicker who alerted police.

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The official claimed that a group of two men each went to plant the bombs in the city.

Saif also told investigators that Atif, who was among the two who was killed in the daring encounter in Jamia Nagar on Friday, was the mastermind of the blasts and that he was a prominent member of the Indian Mujahideen [Images], the official said.

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Atif himself planted the bomb in Greater Kailash market in south Delhi, Saif is believed to have told sleuths of Delhi Police's Special Cell who are interrogating him.

The ten men, for whom the police are conducting searches in various places including Jamia Nagar in south Delhi, are believed to have been brought to Delhi by Atif on July 27.

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Atif, who is believed to have links with Tauqeer, the mastermind behind the serial blasts in various parts of the country in the recent past, had travelled to Ahmedabad [Images] on July 24, two days before the serial blasts in that city, Delhi Police Commissioner Y S Dadwal said.

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He allegedly went to Gujarat with 10 people on July 24 and returned on July 27 along with 12 others, including two people who believed to have arranged for the cars found laden with explosives in Surat [Images].

Saif and Zeeshan will be produced in a Delhi court later in the day.