In figures obtained from the National Council for Crime Prevention (Brå) DN writes that assaults carried out by girls aged 15-20 have increased from 428 in 2000 to 935 in 2010, a rise of almost 120 percent.
The amount of girls aged 15-17 assaulted by males has also increased by 63 percent between 2008 and 2010.
The picture of young female violence is confirmed by Mathias Henriksson of Stockholm police.
"We are seeing now the type of crimes previously committed mostly by guys, like assault and robbery, are now becoming more common amonst girls," he told DN and added that he could only speculate on the reasons for this but said he has seen a marked change in attitude of girls in this age group.
Criminologist Sven Granath at Brå, says that there is still not much research into girl violence but there is no doubt that it is on the rise, both in those who commit assault and those who are on the receiving end.
"That one today takes violence involving women seriously is positive. A society where women are considered non-threatening is not especially equal," Granath told DN.