Dr. Rajendra K. Pachauri, chair of the UN Intergovernmental Panel on Climate Change (IPCC) awarded the 2007 Nobel Peace Prize, resigned Feb. 24 after a woman filed a sexual harassment complaint against him with police in New Delhi, India. Pachauri, 74, had been head of the IPCC since 2002.

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The unidentified 29 year-old woman works with Pachauri as a research associate at The Energy and Resources Institute (TERI), a New Delhi think tank. In her statement to the police, the woman alleged Pachauri harassed her with a series of text messages and emails.

No charges have been filed against Pachauri, who is a one of the most famous figures in the global fight against climate change.

Delhi police are investigating the detailed complaint, in which the woman claimed Pachauri made "repeated and constant requests to have a romantic and physical relationship."

"I told Dr. Pachauri that I was not interested in any such relationship with him on countless occasions, but he refused to give up," she told the police.

The police complaint includes some 20 pages of emails, text messages and WhatsApp conversations allegedly between the young woman and Pachauri.

Shankh Sengupta, a lawyer for Pachauri, said his client "denies all allegations against him." He said Pachauri has told investigators his email and other accounts "were hacked and/or misused," and that any inappropriate messages the woman believes were from him were sent by someone else.

"Dr. Pachauri is cooperating with the investigating agencies. He handed over all the material investigators asked him. He will continue to be available whenever they need him", Sengupta said.

The lawyer for the woman who filed the complaint said he's preparing to turn over more items to the police.

An IPCC statement said Ismail El Gizouli will take over as the panel's acting chairman.

The allegations against Pachauri have received widespread attention in India, where women's safety has remained a hot button issue after a fatal 2012 gang rape of a young student on a New Delhi bus.

Activists said this incident has been game changing since it has since encouraged women to report incidents of sexual harassment. Several cases of alleged harassment and sexual assault involving prominent figures have since been exposed.