Criminal Justice Ethical Scenario?

Report the incident to the district attorney, however I would first collect all corroborating evidence, due to their age there would have to be copious amounts of DNA, fingerprint and other. I would hold them on unrelated gang activity charges until I had the lab results back and then if the evidence supported a conviction the states attorney could charge them with the rape and murder without using the confessions. Since you stated a gang I would get the other gang members and interrogate them legally. The case would be a viable case since you are speaking of 14 year olds and they would leave all kinds of evidence around the area.}{