The man, 24, was been remanded in custody on Friday by Gothenburg District Court. He was arrested on Tuesday, following the discovery of Ivanisevic’s body last Thursday night.
Police are releasing few details of their investigation. It is known that the man attended the same course as Ivanisevic at Gothenburg University, but there the motive for the killing remains unclear. Police have also confirmed that the man is not a Swedish citizen.
“We have looked into his background and have a fairly good idea of who he is, what he was doing in Sweden and his relationship to the woman,” said police spokesman Thomas Fuxborg.
“I cannot say more at present,” he added.
It is not clear how long the man had been in Sweden, but police are certain that he has been in the country for at least a year. He was a suspect in a rape investigation last year, although he was released after a remand hearing. The rape investigation remains open.
Thomas Fuxborg said that the rape investigation had so far not figured in the current murder probe.
“But once he’s remanded we may look at that too,” he said.
Ivanisevic was found in the house belonging to the family for whom she worked as an au pair. She had lived there since moving to Sweden from Croatia. The family was on vacation at the time her body was found.
Police went to the house after Ivanisevic’s friends expressed concern that she had not been in touch for a few days. Police now believe that she was killed on Easter Sunday, several days before her body was discovered. Police have confirmed that she was murdered.
An autopsy confirmed that the woman had been murdered, but police would not reveal what they found in the house or how she had been killed.