Zurich - A Brazilian woman who claimed she was attacked in Zurich by racists is herself being investigated, the Swiss police said Wednesday, on suspicion of misleading the authorities about the incident.

The 26-year-old had alleged that she was attacked at a train station by three neo-Nazis, who cut her body and caused her to miscarry twins.

Pictures of the woman that circulated after the incident showed the wounds, which included an etching of the letters SVP, the initials in German of the right-wing Swiss People's Party, into her legs.

Brazil's Foreign Minister Celso Amorim had said the case appeared to have been sparked by xenophobia.

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

The Swiss authorities have now confiscated the woman's passport, which will ensure that she stays in the country until the investigation is complete.

The police also said they have put a lawyer at her disposal and that they would still continue to investigate her original claims. (dpa)