However, the 18-year-old is still missing. Despite a desperate search, her family hasn't seen or heard from the teen in almost two weeks.
"I'm hoping that we turn up someone that knows something that will lead to us finding her," said Irion's mother, Diana Irion.
The Lyon County Sheriff's Office announced one person and a pickup truck believed to be involved in her disappearance were in custody.
They did not say whether it's the same person and truck seen in surveillance images near the Walmart where Naomi Irion was last seen, but her family is confident they are one step closer to bringing the 18-year-old home.
"It feels like we're on a knife's edge. We're going to get the news soon about what really happened to my sister," said Tamara Cartwright, Irion's older sister.
Cartwright lives in Houston, but she's in Nevada where she has joined family members, authorities, and the Lyon County community as they try to figure out whether Irion was abducted by the man seen driving her car out of the Walmart parking lot.
"Why? Why would you do something so terrible? Why would you cause so much pain for this family?" Cartwright asked.
Irion's car was found near the Walmart with evidence that led deputies to believe something suspicious had happened. Now, with a suspect in custody and more clues, Cartwright said she knows her sister is near.
"I need you to stay strong. I need you never to give up because we will see you soon. This isn't over until my sister is back sleeping in her bed and our arms," Cartwright said.
If you have any information about this case, you are asked to call the Lyon County Sheriff's Office at 775-463-6620 and reference case 22LY01068. You can also contact Secret Witness at 775-322-4900.