SARGODHA (Agencies) Five Americans accused of links to extremist groups protested their innocence Tuesday, saying they were being subjected to electric shocks and other torture by the FBI and Pakistani police. As they arrived in a police van at the high-security court in Sargodha, one of the suspects tossed a scrap of toilet paper scrawled with writing from the window of the vehicle, an AFP reporter said. Since our arrest the USA, FBI and Pakistani police have tortured us. They are trying to set us up. We are innocent. They are trying to keep us from the public, media, our families and our lawyers. Help us, it read. The piece of paper was signed by Waqar, Ahmed, Ramy, Umar, Aman - the names of the five US citizens. Shouts of We have been tortured were also heard from the van. Defence lawyer Tariq Asad said one suspect told the judge that the police gave them electric shocks and warned them not to mention the alleged torture to the media or court. The suspect, Ramy Zamzam, said police threatened to destroy their passports and their lives. Khalid Khwaja, a rights activist who often advocates for detained militant suspects, gave reporters a copy of a letter he said Zamzam had written to his parents. In it, Zamzam repeats the torture allegation and urges his parents to keep praying and trying to contact the suspects. Zamzam is a 22-year-old who was a dental student at Howard University in Washington, DC. The men, aged between 18 and 25, and including two Pakistani-Americans, were arrested in Sargodha in December but have yet to be charged. They are accused of trying to contact Al-Qaeda-linked groups and to plot attacks against Pakistan and its allies. They face life imprisonment if put on trial and found guilty. The Lahore High Court has barred their deportation to the United States. Aamir Abbas, a local police official, said that the court extended the judicial remand of the five men until February 16, when they will again appear in court. The media has been barred from attending the proceedings. Sargodha jail superintendent Anjum Shah denied the mens claims of mistreatment and said the suspects had not complained to prison authorities. There is no torture on the accused in the jail, we are treating them according to the rules, he told AFP. Rick Snelsire, spokesman for the US embassy, also rejected the allegations of torture against the United States and the Federal Bureau of Investigation as baseless, and said they the men had received consular services. They were interviewed by the FBI shortly after they were arrested... We have a consular officer who has visited them on three occasions and I believe she is attending the hearing. So we are closely following the case, he said. Defence lawyer Tariq told reporters that the court agreed to fresh medical examinations for the suspects and would consider a request to allow to them to have private meetings with their legal counsel. Khalid Khawaja said the accused told the judge they had been subjected to electric shocks and threats in jail. Basic human rights are being violated in this case and the guys are being tortured inside the jail, Khawaja said. They are not being provided with the basic facilities inside the jail. There is no newspaper for them, there are no books for them.