HOUSTON — There will be a commemorative service Saturday for the Bellaire High School student who was fatally shot on campus.

The service will be held at West University Baptist Church at 6218 Auden Street from 2 to 5 p.m. Friends, students and the community are welcome to attend.

Investigators said Cesar Alexander Cortes was shot and killed Tuesday by a 16-year-old classmate, who has been charged with manslaughter.

Harris County District Attorney Kim Ogg said the shooting was accidental and Cortes and the shooter were friends.

RELATED: Harris County DA says fatal shooting of teen at Bellaire HS was 'unintentional'

The JROTC cadet, who had already signed up to serve in the Army, was described by several classmates as being a good guy. 

"He didn’t deserve this,” said friend Alejandro Morales.

"He was really shy but once you get to know him, he’s very outspoken and a really, really nice person,” Ceoeste Monroy said. 

On Wednesday, hundreds attended a community vigil for Cortes.

RELATED: Family of student shot to death at Bellaire HS speaks at community vigil

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His brother spoke out, thanking everyone for showing their support. 

"Not only was I overwhelmed to see you, it fills my heart knowing that my brother is looking above right now watching all of us, watching every one of you. Pray for him and be here for him. I will miss him and he did not die in vain because I’m moving forward for him and for my family, for my mother Cecilia and for my father Antonio. This one is for you Alex," said Dylan Cortes.

Police are still looking for the gun used in the shooting. It was a 32-caliber semi-automatic pistol.

If a weapon is found, it should be turned in to the Bellaire Police Department.

HISD Superintendent Grenita Lathan released the following statement Friday night:

"The loss of Bellaire High School student Cesar Cortes has left the HISD community feeling heartbroken. The Bellaire Police Department continues to investigate his tragic death.

"HISD is exploring measures to increase student safety. These include reconvening safety and security council committees on every campus that will review safety protocols and procedures.

"Additionally, I will personally meet with students to hear from them and address their concerns.

"I want to remind all students, staff and parents that the most powerful safety measure is you. If you see something, say something.

You may make anonymous reports to the Houston ISD Police Department any time, day or night at: https://www.houstonisd.org/police."