Police in Portland, Oregon are investigating after four teenagers were stabbed Saturday morning at a pop-up outdoor "rave" party involving hundreds of people.Three adult men in their teens and one boy in his teens were stabbed at the large gathering along the Eastbank Esplanade, Portland Police told Fox News Digital.All four people were conscious and talking at the scene, according to authorities. Two were taken to the hospital with serious injuries and the other two were taken to the hospital for minor injuries.CHICAGO DRIVE-BY SHOOTING LEAVES AT LEAST 4 DEAD, 14 WOUNDEDPolice said during the rave, there was a disturbance in the crowd.However, it is unclear how many people were involved in the scuffle.At some point, "someone" pulled out a knife and initiated the stabbing, authorities said.TERRIFYING TREND EMERGES AS MUSIC FESTIVAL FANS SUFFER MYSTERIOUS NEEDLE ATTACKSOne of the men who was taken to the hospital was detained by police, pending an investigation.The man's identity has not been publicly released, and it is unclear if he is facing any charges.Portland Police are not currently looking for any suspects, but asked those who were at the party to help detectives piece together the series of events."Many potential witnesses left without talking to police," officials said.Witnesses are asked to e-mail crimetips@police.portlandoregon.govattn: Major Crimes Unit and reference case number 25-192630.