Forensic experts scanning the material evidence indicated that the same person could be behind making or placing two of the five bombs that went off in the national capital on Saturday while Delhi Police detained three more people for interrogation.
Scientists at the Chandigarh Central Forensic Science Laboratory (CFSL) said fingerprints collected from the sites of the Delhi blasts suggest that same man was behind two of the five blasts in New Delhi - at Gaffar Market and the Central Park in Connaught Place.
"The fingerprints on the material collected from two blast sites, Gaffar Market and Central Park, were identical. We are doing more tests and matching samples from other sites as well,” a scientist at the CFSL told IANS.
“This could mean that either the same person assembled the bombs or these were planted by the same person. Further investigations are being made," a scientist at CFSL told IANS.
CFSL director RK Verma told mediapersons that samples had been brought by scientists from the blast sites in Delhi and the same were being examined.
"We have brought the samples and are examining them. We will submit our report shortly," Verma said.
CFSL experts have been collecting samples at all five blast sites - one in Gaffar market, two in Connaught Place and one in upscale M block market of Greater Kailash I - in New Delhi since Sunday. The examination of the samples started Chandigarh Tuesday.
The experts brought one of the defused bombs, samples of the dustbins in which other bombs were planted and also other samples from the explosion spots.
The CFSL will also find out the ingredients used in the bombs.
At least 24 people were killed and scores injured as five serial blasts rocked Delhi Saturday evening.
Continuing the probe, Delhi Police Wednesday detained three people from west Delhi Janakpuri area in the morning and were interrogating them at the Lodhi Road office of the Special Cell. The three are reportedly from Punjab.
So far, Delhi Police have questioned more than 30 people in the capital.
The police also distributed five sketches of three suspected bombers to auto rickshaw drivers to keep an eye for them.
“We are distributing the sketches to auto rickshaw drivers as the Gaffar market bomb went off in an auto rickshaw. We are sensitising them and asking them to remain vigilant,” said a police official.
Police officials were planning to provide these sketches to officials posted at nearly 500 Police Control Room (PCR) vans that guard the national capital round the clock.