Police have a new weapon in the battle against rape after a suspected sex attacker was sniffed out by a dog specialising in smelling sperm.
A 23-year-old man has been arrested for the crime in Karlskrona after southern Sweden's only trained dog helped gather evidence at the crime scene that could now be used to convict him.
Swedish authorities hope to use the technique more after the dog - called Rapports Opus - found traces of semen, which, after being sent for analysis, was found to match the suspect's DNA.
It is alleged in June the man threatened and physically forced a woman to perform oral sex on him in a park.
As well as medical evidence from the woman, there are said to be several witnesses to the crime.
However, the prosecutor has described the sniffer-dog's work as one more 'ace up his sleeve' as it will be the first time such evidence gathered by a dog will be used in court.
'The technical evidence is very good,' prosecutor Mårten Alvinsson said.

The man allegedly carried out a sex attack on the woman in a park in Karlskrona, southern Sweden, in June

The dog has gone through a year of training to reach his senior position as the sole sperm-sniffing dog of the region after graduating last August.
'He's the only dog in southern Sweden specialised in tracking sperm,' said B-G Carlsson, the police officer who trained Rapports Opus.
Mr Carlsson will be testifying in the trial against the 23-year-old.

Read more: Sperm sniffer-dog being used in the battle to convict rapists | Mail Online