Tailyn Wang was two months pregnant when federal police officers broke into her house in Mexico City, ripped off her nightgown and threw her to the ground. They groped her breasts while punching and kicking her in front of her terrified children, before taking her blindfolded to a police base - without an arrest warrant. Wang is one of scores of innocent women illegally arrested and tortured by Mexican security services looking to boost arrest figures to justify the war on drugs, according to damning new research by Amnesty International. Of the 100 women interviewed for the report, 72 said they were sexually abused during or soon after the arrest. Ten of the women were pregnant when arrested; eight subsequently suffered a miscarriage. The vast majority were young, poor, single mothers. Most spend years in prison awaiting trial, without access to adequate healthcare or legal advice. Wang, who has reported the torture to judges, prosecutors, doctors, and the National Commission for Human Rights, was falsely accused by an acquaintance, a local police officer, after he was also tortured. Reports of torture have increased exponentially in Mexico since former President Felipe Caldern first deployed tens of thousands of armed forces on the streets to combat warring drug cartels and organised crime. The navy, which has been deployed in some of the most violent states ... appears to have a particularly serious torture problem. Among the women interviewed by Amnesty, eight out of the ten arrested by the navy were raped.