Five inmates accused of taking part in a riot at the Hei Ling Chau Treatment Centre helped fuel a fire that was used in an attempt to force out Vietnamese inmates holed up in a dormitory, a court heard yesterday. Prosecutor Wayne Moultrie told a Court of First Instance jury that Dormitory 11 formed the backdrop for much of the rioting as 13 Vietnamese had barricaded themselves inside to escape a mob of about 100 local inmates on June 4, 2000. He also said the riot, which broke out just before 7pm, was not quelled until police moved in at 4am the next day. Several inmates and officers were injured during the rioting, which caused millions of dollars worth of damage, he said. On the night of the riot there were 446 inmates housed in the dormitories. Sing Kwok-kin, 29, So Yuet-po, 23, Liu Hung-kwok, 28, Wong Kwok-kit, 23, Lam Mo-wai, 27, have each pleaded not guilty to one count of rioting and one count of arson. Mr Moultrie said although there was no doubt the riot took place, it was up to the jury to decide if the five men in the dock took part. He said in relation to the charge of arson, the jury would hear evidence that during the night of the riot, all five threw material on to the fires outside the Vietnamese's barricade. The trial before Mr Justice Michael Burrell continues today.