BBC News Published image captionHashem Abedi (left) and Ahmed Hassan are both being held at Frankland Prison, County Durham The Manchester Arena and Parsons Green bombers will go on trial later this year charged with a prison assault. Hashem Abedi, 23, and Ahmed Hassan, 21, are accused of assaulting a prison officer together in HMP Belmarsh, south London, in May 2020. A hearing at Woolwich Crown Court earlier heard that neither defendant was engaging with the case. Judge Michael Evans QC fixed a trial date of 6 December at the same court. Hassan appeared by video-link from HMP Frankland, but did not speak when addressed by the judge.