Soon after the Delhi police recovered an improvised explosive device from the city's Ghazipur flower market on Friday, the special cell said that the suspects had done a detailed recce of the spot where the explosive was recovered.
According to sources in the special cell, the bag full of IED was kept near the gate of the flower market. Its detailed recce had been done by the suspects.
If the bag had been kept inside the gate, it could have been captured in the CCTV camera. The bag was kept on the ground.
The police had received a call after which the team had been alerted.
A man named Anupam had informed the control room about the presence of an unattended bag at 10.19 am on Friday.
His scooter was parked at the place where the explosive was planted.
The special cell sources further said that two CCTV cameras are installed at the gate of the market and the police are exploring them along with the cameras installed in the nearby areas to find clues about the suspect.
"There are two CCTV cameras installed at the gate of the flower market. However, none of the cameras could capture the act of placing the bag at the spot. One camera is fitted on the inside and the other on the outside. There were possibilities of finding the footage of the incident on the CCTV on the outside," the sources said.
"But the camera has been placed in such a way that it captures the number plate of the vehicles entering the market. So, the police could not find any clue from the footage. The Delhi police is also looking into the CCTV camera footage of nearby locations to find a clue to the suspect," added the sources.
Minutes after the incident, the Delhi police said, "A case has been registered in the Delhi police special cell under provisions of the Explosive Substances Act."
Sensing the severity of the matter, National Security Guard commandos were sent to the spot.
Later, the NSG officials told ANI, "A bomb disposal squad of NSG has defused the IED recovered from Ghazipur. Samples of the IED have been collected and the NSG team will later submit a report of the chemical component used to assemble the explosive."
Delhi police commissioner Rakesh Asthana told ANI on phone, "Based on the information received, an IED has been recovered."
The bomb disposal squad of the NSG has shared with chief MA Ganapathy that prima facie, RDX and ammonium mitrate chemical compounds are suspected to have been used in the manufacturing of the approximately 3 kg IED.
A post-analysis lab report being conducted by the NSG's BDS is under process.