A Swedish doctor has been jailed for ten years after admitting kidnapping a woman and keeping her captive for six days.

Martin Peter Trenneborg pleaded guilty to kidnapping the woman and locking her in a specially constructed soundproof bunker built on his farm. But he denied rape and was cleared of that offence.

Dr Trenneborg abducted the woman at her home in Stockholm after meeting her there for a first date.

He drugged her with strawberries spiked with the sedative Rohypnol, before transporting her to a purpose-built bunker in his isolated house in southern Sweden, about 340 miles away.

The prosecutor said he had planned to hold her prisoner as his girlfriend for years which prompted comparisons to Austrian Josef Fritzl, who kept his daughter captive in his cellar for 24 years.

The bunker built by Dr Trenneborg had been built over several years and featured electronic locks with several rooms, a toilet and a small enclosed courtyard.