Police in Sweden are investigating five reported rapes and nearly forty instances of groping at two music festivals over the weekend.

“Foreign young men“ were blamed by police for the attacks at one of the festivals and at least two unaccompanied migrant youths were under arrest.

Police recorded five reports of rapes and 12 of sexual molestation at Bravalla, Sweden's biggest music festival, and 35 reports of sexual molestation at Putte i Parken, a free festival in Karlstad, where the youngest victim was just twelve years old.

Two of the seven young men suspected of mounting a campaign of aggressive groping at the second festival were unaccompanied refugee youth, reportedly living at a nearby accommodation centre.

Police are looking for a man who speaks “flawless Swedish” in connection with one of the five rapes at the first festival.