A community is mourning the loss of a 17-year-old who was shot and killed Sunday night at the Northgate Apartment Crossing complex. 

"It really is so sad. It hurts your heart especially as a mother," resident Lacie Donegan told Channel 3. 

The victim has been identified as Isaiah Bush. Friends and family put together a memorial, compiled of teddy bears, balloons, and candles. 

"I thought it was a great representation to show him and the community how much he was loved," said Donegan. 

Chattanooga Police say three people tried to rob Bush before shooting him in the head-- each being charged with criminal homicide. They arrested two suspects, Jermaine Grant and a minor who has not been named. 

The third suspect, Jalaycian Barrow, is still on the loose. 

"For him to be gone now, especially for something so senseless, it's just devastating," Donegan told Channel 3. 

Donegan lives in the complex. She says Isaiah Bush, also known as 'Zay," was her kids' role model. 

"It's definitely devastated them really bad. Like it was one of their classmates. Even though he was older, they looked up to him," said Donegan. 

She says she wants justice for the young man who meant the world to the community. 

"He was a good kid, he really was a good kid," recalled Donegan. 

A spokesperson with the Chattanooga Police Department says community assistance played a big role in catching two of the three suspects. If you know where Jalaycian Barrow is, call Chattanooga Police at (423) 698-2525.