A key suspect in this week's blast in Delhi was arrested in Ghaziabad, during a joint operation carried out by the Delhi police and Uttar Pradesh Anti-Terrorist Squad, Friday.
"We managed to arrest Gulfam from Pilkuha village in Ghaziabad district," special Director General of police Brij Lal told mediapersons on Friday evening.
Gulfam's accomplice Nafees, was however stated to be "absconding". Meanwhile, the joint team has picked up about 10 other people for interrogation.
According to Lal, both the suspects belonged to Pilkuha where they were working as roadside hawkers.
"We have reason to believe that they were sleeper modules of the Indian Mujahideen, that has been involved in carrying out blasts in different parts of the country."
Asked what could be the reason behind the low intensity blast by a notorious terrorist organiaation such as the IM, Lal said, "Apparently, these fellows were trainees who were still in the process of acquiring the expertise of preparing explosives and carrying out blasts."
He added, "There were two batches of IM activists comprising of a team of well-trained terrorists and another of trainees."
He said that even as the nature of explosives used in the Delhi blast was quite lethal, the blast remained a low intensity one without causing the intended devastation.
"This was because we think that the job was entrusted to novices, and they could not carry it out properly.Thankfully they did a shoddy job, thereby saving any major damage," he said