Mumbai, Feb 16 (IANS) The Maharashtra Anti-Terrorist Squad (ATS) is minutely analysing the closed-circuit television camera footage (CCTV) obtained from a hotel opposite the Pune terror attack site, but no breakthrough has been achieved into the bombing, police said here Tuesday evening.

Talking to mediapersons, state Inspector-General of Police (IGP) Rashmi Shukla, while firmly declining to reveal details of the investigations, said that ATS teams were still at the blast site.

'They're searching and investigating everything, inch-by-inch, for all the minute details,' she told reporters.

However, despite repeated proddings by the media, Shukla declined to hazard a guess about the group or individuals who could have perpetrated the terror blast at the German Bakery Saturday that killed 10 people.

But she pointed out that the investigators need time and they are doing everything possible. 'They will leave no stone unturned, but we cannot expect results overnight,' she said.

Shukla said that four ATS teams are at work on the investigations and whenever any major breakthrough is achieved, they would share it with the media.

She said that the forensic report received by the police has confirmed the deadly presence of RDX, ammonium nitrate and other hydro-carbons in the explosive.

Referring to the footage of the CCTV cameras of the hotel opposite German Bakery, Shukla said that it is being minutely analysed for clues.

Shukla also said that she had no information about the arrests of two or four people in connection with the blast, as speculated in a section of the media.

This fact was also revealed by Pune Police Commissioner Satyapal Singh Tuesday morning in Pune.

Speaking to the media briefly, Singh said that 'significant clues' have been recovered from the CCTV footage.

'We are now hunting for the prime accused in the case and expect to make an important breakthrough in the blast investigations very soon,' Singh asserted.

Singh had also said that one victim Abhishek Saxena, a student of DY Patil College, succumbed to his injuries in the morning.

Another 37 injured people are currently being treated in various city hospitals, of whom two are reported to be critical.