LONDON -- CNN presenter Piers Morgan, who used to edit U.K. tabloid the Daily Mirror, has been interviewed under caution by British detectives investigating phone-hacking.

In a statement sent to the Guardian newspaper, Morgan said: "In early November I was asked to attend an interview by officers from Operation Weeting (which is investigating phone hacking) when I was next in the U.K.

"This was further to a full witness statement I had already freely provided. I attended that interview as requested on 6 December 2013."

Scotland Yard confirmed that a 48-year-old journalist was interviewed on that date at a London police station by officers from Operation Golding, which is the strand of Operation Weeting investigating allegations of phone hacking at the Mirror.

Morgan said on Twitter Friday, "I have a confession to make with regard to this @guardian story… it's 100% true."

Morgan was editor of the Mirror from 1995 to 2004. In evidence to the Leveson inquiry, which investigated phone hacking as well as other examples of press malpractice, Morgan said he did not believe that phone hacking had occurred at the Mirror.

But in an interview he gave to Press Gazette in 2007, he said that phone hacking was an "investigative practice that everyone knows was going on at almost every paper in Fleet Street (the historic home of U.K. print journalism) for years."

Another witness, BBC presenter Jeremy Paxman, said that Morgan told him how to hack into a mobile phone during at a lunch in 2002.

The Leveson report stated that "Morgan's attempt to push back from his own bullish statement to the Press Gazette was utterly unpersuasive."

Morgan joined CNN in 2011 as host of "Piers Morgan Live," which replaced "Larry King Live."

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