Swedish police photos taken inside the bunker built by Martin Trenneborg. Photo: Swedish Police Authority

He allegedly wore rubber masks of bearded and elderly men during the journey to avoid being recognised.

The woman is reported to have been handcuffed for most of the six days of her incarceration and raped repeatedly, according to CNN.

Aftonbladet reported that the doctor allegedly acquired the contraceptive pill, as well as equipment to test if the captured woman had a sexually transmitted infection. He allegedly tested the woman’s samples at his work.

After six days, Dr Trenneborg reportedly drove back to Stockholm to retrieve some of the woman’s belongings from her apartment, when he discovered she had been reported missing.

Dr Trenneborg’s barrister, Mari Schaub, told Bild that her client found a piece of paper taped to the woman’s front door that read: “We miss you”.

“Someone had searched for the woman. That was the last straw,” she said, the newspaper reported.

Dr Trenneborg then took the woman to a police station in Stockholm on September 18, hoping to persuade police that she was unharmed and that they were a genuine couple, according to The Local, an English-language newspaper in Sweden.

However, officers became suspicious and spoke to the woman separately. She told them that she had been kept prisoner.

The newspaper reported that Dr Trenneborg admitted drugging the woman and taking her to his home, but denied raping her. He also wanted the kidnapping charge to be reduced to a less serious charge of deprivation of liberty.

“He is a man who was mentally depressed and, when at the police station, complied with all the requests of the police,” Ms Schaub told CNN.

“He is very much in regret of what he has done.”

When police searched the bunker, they allegedly found a simple Ikea pine bed, a desk and a kitchen area with a sink and hot plate, as well as a fridge stocked with fresh food.

Dr Trenneborg’s trial is due to start in the Stockholm District Court on Monday, local time.

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Henry Sapiecha

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