A German woman, 31, has been extradited to Sweden where she is suspected of bashing two children, 1 and 3, to death, Swedish police said Wednesday.
The woman student was flown Tuesday evening to Sweden, and at around 11 pm (2100GMT) was placed in custody in Vasteras about 100 kilometres west of Stockholm, police spokesman Borje Stromberg said.
A custody hearing was pending, Stromberg said.
Swedish authorities have cooperated with prosecutors in the German city of Celle over the case, dpa reported.
The woman student denies allegations, widely aired in the media, that after she was jilted by a Swedish boyfriend, she had attacked his new girlfriend and the Swedish woman's children from previous relationships. News reports say the murder instrument was a hammer.
The Swedish woman, 23, survived the mysterious attack in the town of Arboga in March but reportedly cannot remember what happened.