England one-day captain Eoin Morgan has been the victim of a blackmail threat, the England and Wales Cricket Board (ECB) has confirmed.

The threat relates to a relationship Morgan previously had with an Australian woman, with her current boyfriend attempting to extort money out of the ECB.

Morgan is currently leading the England 50-over team in a tri-series with Australia and India.

"In the last few days, the ECB received an email from an Australian man demanding a five-figure sum to prevent a story about our one-day captain Eoin Morgan appearing in the national newspapers in the UK and Australia," read a statement from English cricket's governing body on Thursday.

"The allegations related to a brief relationship Eoin had with a woman from Australia five years ago. Following liaison with the Metropolitan Police, our support team on the ground in Australia investigated the blackmail.

"This involved approaching the man in question who, when confronted, admitted and apologised for his actions, blaming jealousy (he is presently in a relationship with the woman concerned).

"The ECB will not allow anyone to disrupt our team's performance on the field of play. We are wholly focussed on winning cricket matches.

"This matter has now been brought to a conclusion and we will not be seeking further action against the individual at this stage."

ECB managing director Paul Downton said: "We will not allow anyone to disrupt our team's preparation or performance in the tri-series and as we build up to the World Cup.

"I am pleased that this issue has now been brought to a swift conclusion.

"At this point we'd like to thank the Metropolitan Police for their advice, which assisted us in dealing with this in the swiftest possible manner."