In Denmark 40% of prison inmates are people who are not danish. BUT only about 10% of the population are foreigners, wich means the crime rates for people who are not danish is significantly higher than for us "native" danes... Quite alarming if you ask me.

Source -> www.kriminalforsorgen.dk/Sp%C3%B8rgsm%C3%A5l-om-forholdene-i-institutionerne-422.aspx#FAQ75

(warning source in danish)

Cant find source for the 10% of population being foreign but some sources claim that it is actually lower!