Zurich - The mystery of a Brazilian woman who claimed she was attacked by three skinheads in Zurich earlier this week deepened Friday as new details emerged that cast some doubts on her story.

Police responded to a train station in the major Swiss city on Monday after reports that a pregnant woman was attacked with a knife during a racially motivated crime. The
26-year-old Brazilian, who said she was three months pregnant at the time of the attack, said she went into a bathroom afterward and miscarried.

However, the Institute of Forensic Medicine determined Friday that she was not pregnant at the time of the attack. Police also said the wounds on her body could have been self-inflicted.

Pictures which circulated in Swiss and Brazilian media showed the woman's legs with superficial wounds and the letters SVP - the German abbreviation of the right-wing Swiss People's Party - cut into her skin.

Foreign Minister Celso Amorim of Brazil had said the case was "disturbing" and seemed to been sparked by xenophobia. The Swiss ambassador to Brazil was summoned by government officials to provide clarifications.

Swiss police said they were still investigating the woman's case and added that she was being treated at a hospital. Her family had arrived from Brazil and was with her. (dpa)