Paul Downton had replaced Hugh Morris in October 2013, shortly before the Ashes whitewash in Australia.
England have one more group game against Afghanistan but victory will not prevent a third group-stage exit.
The ECB has reached out to the Scotland Yard to track down the person who is blackmailing.
However, managing director Paul Downton said that he still believes he was the right man for the job.
Downton also claimed he was unable to find a single person who wanted the batsman to stay.
Flintoff also believed that Pietersen was an immensely talented cricketer.
Cook is expected to be able to continue captaining the Test side and will focus on England's bid to regain the Ashes.
Downton admitted that Cook is having a terrible time at the moment.
ECB may wait for him to publish his book and be damned before releasing a measured response.
Team's Managing Director Paul Downton revelas Cook thought of giving up during series against Lanka.