A source close to Orange claims the sackings at mobile phone operator Orange were over the distribution of images of 'severed body parts' rather than pornography, as was originally reported.
Although Orange will not confirm the details a spokeswoman said that, under the company's terms and conditions, the distribution of messages or attachments that are "offensive, harassing, obscene, racist, sexist, threatening or libellous" is strictly prohibited. She added that the material distributed was more "offensive" but offered no more detail.
Staff were dismissed from both Darlington and Peterlee call centres last week.
The company is currently carrying out a full audit of its internal Lotus Notes email system across the UK, to find out if there are further offenders.