OAKDALE (CBS13) – Two people who had their lives ahead of them are dead after a shooting in front of an Oakdale market Sunday night.

One of the victim’s was 20; the other just 15 years old.

“I had to wait 10 years for him. I was an only child for 10 years,” Melissa Mora said after her only brother, 15-year-old Ruben Mora Jr., was gunned down in front of the Oakdale Market on East I Street at South Yosemite Avenue at about 9 p.m. Sunday.

Abel Calderon was also shot and killed.

“My brother never got into any fights, any trouble, always stayed clear of things like that,” Melissa said.

Witnesses told family members that Ruben went to the store to get a soda and was not involved in any altercation.

“This guy came down, the shooter, he went home, came back with a gun, and he went right by and started shooting everyone that was standing,” Ruben’s aunt Marcie Mora said.

A patrol officer responded after hearing gunshots. The offficer found both victims. Ruben died in front of the store and Abel in the emergency room.

Witnesses led police to 25-year-old Ryan Mazzariello. He was arrested at his home in Oakdale and charged with double homicide.

Makeshift memorials have been set up in the spot where Abel and Ruben were killed as family and friends are left mourning.

“He was always so happy,” Melissa said. “He loved his friends, he loved hanging out with him. He was always smiling, laughing.”

Mazzariello is being held at the Stanislaus County Jail.

The Stanislaus County Sheriff’s Department, which is working with Oakdale police on the investigation, said in a press release Monday that “detectives are withholding the motive and details from the homicide investigation as they continue to interview witnesses over the next few days.”

There were about 10-15 people standing out in front of the store when the shooting happened, the sheriff’s office said.

The murder weapon was recovered at the crime scene, according to the sheriff’s office, which confirmed that Mazzariello has a military background.