CBI chief Anil Kumar Sinha Saturday said the agency has minutely investigated all the cases, adding he preferred "zero-defect" probes.
Speaking at the Agenda Aaj Tak - 2014 conclave, Sinha said: "We carry out minute probes while investigating every case."
It is people's perception that we falter at times, he said.
"I prefer zero-defect in our investigations," the CBI chief said, adding that the Central Bureau of Investigation (CBI) investigates around 1,00-1,200 cases annually,
A 1979-batch Indian Police Service officer of the Bihar cadre, Anil Kumar Sinha replaced Ranjit Sinha, who had a controversial tenure as the head of the premier investigative agency.
He has held several important positions earlier in the vigilance and anti-corruption, administration, and the special branch.
