Mikaela Kellner and her friends were sunbathing in the Rålambshov park in Stockholm when a man walked up to them pretending to sell magazines for homeless people. When he refused to take no for an answer, but instead lingered around their blankets, she started suspecting that something was wrong.
"I told my friends to keep an eye on their things. But as soon as he left one of my friends said 'where did my mobile phone go?'" Kellner told The Local on Thursday.
She explained that the man had used his magazines to cover the mobile phone, picking it up without anyone noticing when he left. Let's just say this was a decision he would soon come to regret.
"There was no time, so I ran after him, maybe 15 metres or so. One of my friends is also a police officer, so we got hold of him. He tried to get away so we held onto him harder," she said.
They called their colleagues on duty who were able to get there to arrest him.
Kellner has been a police officer for 11 years, but it is the first time she has nabbed a suspect while wearing a bikini. She said a picture she posted on Instagram quickly went viral after Aftonbladet wrote about it.
"I just acted on instinct and didn't think about it so much until after we had pinned him down. When I sat there I looked over at our other two friends who are not police officers and realized that it probably looked pretty funny. But I would have stepped in no matter my outfit," she said.
"I've had a lot of positive comments both from friends and colleagues. It happens all the time that valuables are taken like this and often you don't notice they're gone until later. I mainly just wanted to raise awareness of how cunning these people are, almost like magicians."