London, Aug 19 : Simon Cowell had to finally call the police after it was found that 2006 X-Factor winner Leona Lewis'' new track was leaked on the Internet.

Cowell, the producer of the show, discovered that hackers targeted his record company Syco’s computers in a bid to nick tracks.

It was earlier revealed that unfinished songs by last year''s X Factor winner Alexandra Burke were stolen, and were being marketed as the finished article.

But the latest leak is the hotly anticipated single from Leona, ‘Don''t Let Me Down’, in which she has collaborated with Justin Timberlake.

The track is seriously being considered as the first release from her second album, but it has found its way on to the web and is apparently the final straw for Cowell.

"Syco are working alongside the International Federation of the Phonographic Industry, the British Phonographic Industry, the police and investigators in this and they are making fast progress,” The Sun quoted a spokesman for Syco - part of Sony BMG – as saying.

The spokesman added: "We will certainly look to bring charges against those who are responsible. We cannot give any more details at this stage for operational reasons." (ANI)