An ongoing government investigation is continuing into claims that the phone of Heather Mills, ex-wife of Paul McCartney, was hacked by journalists.

Heather mills says she realized her personal voicemails from she and then-boyfriend McCartney had been hacked in 2001. Mills and McCartney were in the midst of a fight, when a desperate McCartney left around 25 apologetic messages on her phone.

"I turned my phone off because he kept calling at the time and it was stressful," she stated in court. She says when she awoke there were 25 messages from McCartney, one of him singing her Beatles song "We Can Work It Out."

Mills says soon after they made up, she received a call from a reporter telling her he'd heard the message.

"He said look Heather, we know that you and Paul have had an argument. I've just heard a message of him singing on the phone to you asking for forgiveness," she revealed in court.

She says she told him there was no way he could know that unless he'd been listening to her messages. "He laughed," she said.

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Five years later, in the midst of their $50 million divorce, the media was in a frenzy, reporting on every detail.

During this time host, current host of CNN's "Piers Morgan Tonight," wrote a story in which he called Mills a "monster" and admitted hearing the messages.

"At one stage I was played a tape of a message Paul had left for Heather on her mobile phone," he wrote. "It was heartbreaking …he sounded lonely, miserable, and desperate. He even sang 'We Can Work It Out' into the answerphone."

Morgan won't reveal how he heard the message, but does deny any illegal action. He was asked by a prosecutor December in court if he thought listening to it was unethical.

Morgan responded, "Well it depends on the circumstances in which you're listening to it. In that divorce case Paul McCartney had stated as a fact that she had recorded their conversations and given them to the media."

Mills denies ever playing anyone her voicemails or authorizing anyone to listen.