The woman is a reasonable suspect, prosecutor Klara Åbyhammar tells SVT Nyheter Örebro.
Two people who were out on a boat on northern Lake Vättern were reported missing on Wednesday morning. The boat was found later that morning, and a few hours later police announced that one person was dead and another had been arrested.
The prosecutor does not comment on whether the two were wanted, whether there are additional suspects or whether more people were on the boat.
"I don't want to answer that," Åbyhammar says.
