Police investigating a cyber attack at exam board AQA during last summer鈥檚 exams said there were 鈥渘o further positive lines of enquiry鈥� to pursue. Surrey Police arrested an 18-year-old man from London and a 24-year-old woman from Birmingham on suspicion of computer misuse and fraud offences last year. This followed a data breach at AQA, which is based at the University of Surrey, in June. This week, said that, following a 鈥渢horough investigation, the current position is that there are no further positive lines of enquiry and no further evidence available to link the two people who were arrested to the allegation鈥�. A spokesperson added: 鈥淪hould any new lines of enquiry come to light, these will be reviewed and investigated if appropriate.鈥� Both people had been stood down from bail and no further action will be taken against them at this time. A separate investigation by Cambridgeshire Police into cyber attacks at exam boards OCR and Pearson is continuing. A 16-year-old boy was arrested on suspicion of theft, fraud and computer misuse. He has been released under investigation. The Joint Council for Qualifications, which represents exam boards, previously said that 鈥渆very year, awarding organisations investigate potential breaches of security鈥�. It added: 鈥淲hen investigations are complete, sanctions 鈥� which may be severe 鈥� are taken against any individuals found to be involved鈥�.