CHATTANOOGA, Tenn. (WATE) — Several people were injured following a shooting in downtown Chattanooga, police told ABC.

Chattanooga Police officers were patrolling near 100 Cherry Street around 10:48 p.m. when they saw “multiple parties exchanging gunfire and numerous people fleeing the area,” according to ABC.

Police told WTVC in Chattanooga that six people were injured. Of that six, two are believed to have life-threatening injuries. Police added that the victims are in their teens or early 20s.

“Our officers began rendering aid to the victims as well as assisting others to safety,” a police spokesperson shared with ABC. “They were able to detain at least one person of interest in the incident in the moments after the shooting began.”

Police spokesman Jeremy Eames told the Associated Press that large groups of juveniles were walking around the downtown area and it’s believed the shooting took place from within that group.

Authorities tell Nextar’s KRON that they do not believe all of the victims were intended targets.

Tim Kelly, the mayor of Chattanooga, shared on Twitter, “My heart is with the families whose lives have been upended by this horrific situation.”

Kelly and Chattanooga Police held a news conference Sunday afternoon.

“This afternoon, I have to admit that I’m experiencing a wide range of emotions. First, I am heartbroken for the families and the victims whose lives were upended last night by gunfire. No parent should ever have to get that call,” said Kelly.

“I am also angry. Six teenagers were shot last night in what we believe was an altercation between other teenagers. And once again I am standing in front of you talking about our community’s youth getting shot. That’s outrageous and has to stop. It’s ridiculous that I even have to publicly state that guns have no place in the hands of our kids and that children shouldn’t be wandering around in the middle of the night without supervision,”

Kelly also shared that he is directing his “office to work with the police department and the district attorney to enforce existing laws that hold parents accountable for knowingly providing or allowing children access to guns that result in violence.”

EDITOR’S NOTE: This story has been updated.