The shooting took place in the venue's parking lot as the concert was ending, according to Associated Press's report. As a result, Red Rocks was shut down and law enforcement officials searched for the gunman. Authorities said they were looking for a Black male with a rifle.
The three people who were wounded in the shooting reportedly traveled to Denver, Colorado where they were taken to a nearby hospital by police officials. The wounds did not appear life-threatening, AP reports.
The thousands in attendance reportedly had their vehicles searched as they left.
The Associated Press reports that no arrests have been made.
Karl Gehring, whose verified Twitter account says he is a reporter for The Denver Post, took a photograph of ScHoolboy Q, saying he was detained by Denver Police. The Denver Post published Gehring's photograph.
ABC's James Dougherty also posted an image of Q, saying the image was of "the man detained."
There has been no official word on why ScHoolboy Q was detained and the rapper's camp has not released a statement on the matter.
One person was detained as Denver Police investigated a triple shooting after a concert at Red Rocks Thursday night. pic.twitter.com/Nfa7oeMHz4
— Karl Gehring (@karlgehring) June 20, 2014
Here is a better picture of the man detained at 7th & Kalamath. Jefferson County SO is taking over investigation. pic.twitter.com/rZO2lLkhqE
— James Dougherty (@Dougherty7NEWS) June 20, 2014