of threats increased, according to Kaye. Paul Fitzsimmons alleges that he was threatened while in prison with rearrest on release unless he supported the police's account of solicitors asking for bribes in another case, that of Ronnie Bolden. DS McManus is alleged to have asked Fitzsimmons to claim that Bolden's solicitors had offered him a bribe to give evidence to help Bolden. Hassan Khan claimed that he was told during his journey back from arrest in North Wales, that he would be beaten up and treated in the same way as the Birmingham Six, and was going to meet the person who dealt with them. Eileen McCabe, the sister of supergrass Albert, said she was told to sign a confession. Her children were brought to the police station, despite prior agreement that they were to stay with their grandmother, with the effect of making her extremely concerned about how they were being treated. She signed the confession, but it later came to light that she had difficulty reading so was unlikely to have understood its contents. George Lewis alleged that he was threatened with a syringe, with police saying they would give him injections, which he feared, if he did not sign. A witness in the case of PC Salt's murder also alleges that she was intimidated and shouted at while being told to implicate the others involved, while the main suspects were threatened with the murder charges if they did not confess to his robbery. Interference with evidence In some cases, the SCS was accused of fabricating forensic evidence. Ronnie Bolden alleged that police rubbed his shoes and socks on a getaway car's carpet. In the case of Robert Burston and others, police were said to have taken bin liners with their fingerprints and placed them in a post office van. Keith Twitchell claimed his hairs were planted as evidence, although this was not used in court. During the PCA inquiry, seven police notebooks were found to be missing, despite it being a requirement for these to be kept secure for seven years. Six arrest files out of 658 for the period 1986-August 1989 were missing. Kaye concludes that files going missing was "not uncommon" at the SCS. In the case of Gall, this included witness statements from the assault victim which described their assailant as very different in appearance from Gall. This evidence did re-appear, late in the