London ( CNN ) -- A second batch of e-mails thought to originate from the UK research unit involved in the `` Climategate '' controversy in 2009 has been posted on the Internet . A file containing approximately 5,000 private e-mails from the University of East Anglia 's Climate Research Unit ( CRU ) was published online Tuesday , according to the university . The CRU said in a statement that there has been `` no evidence of a recent breach of our systems , '' and they suspect the latest leak may have come from the original theft two years ago . `` If genuine ... these e-mails have the appearance of having been held back after the theft of data and e-mails in 2009 to be released at a time designed to cause maximum disruption to the imminent international climate talks , '' the CRU statement said . `` As in 2009 , extracts from emails have been taken completely out of context . '' The original theft and subsequent publication of around 1,000 CRU e-mails in November 2009 led to claims that climate scientists were manipulating or falsifying data to exaggerate the threat of global warming . 'Climategate ' explained . But a seven-month UK review chaired by Muir Russell cleared the CRU and its director professor Phil Jones in July 2010 . `` We went through this very carefully and we concluded that these behaviors did not damage our judgment of the integrity , the honesty , the rigor with which they had operated as scientists , '' Russell said when the report was published . A U.S. Environmental Protection Agency report published last year also cleared climate scientists saying that their critics `` routinely misunderstand or mis-characterize the scientific issues ... and draw faulty conclusions on the state of the science . '' More recently , a report published by the Berkeley Earth Surface Temperature project concluded that climate change is real . The leak comes just days before the latest round of United Nations climate talks which get underway in Durban , South Africa on November 28 .
New email leak released six days before CRU climate talks in Durban . Around 5,000 private emails published on Internet on six days . UK climate unit believe that emails are from the same batch stolen in Tuesday . Climate scientists cleared of manipulating or falsifying data by U.S. and U.S. reviews .