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Nevada authorities are searching for an 18-year-old woman whose disappearance they say is 'suspicious in nature'

(CNN) Nevada authorities are asking for the public's help in finding an 18-year-old woman who has been missing for more than a week.

Naomi Irion's disappearance is "suspicious in nature," according to a Lyon County, Nevada, Sheriff's Office news release.

Irion was last seen in her car in the parking lot of a Fernley, Nevada, Walmart, authorities said. She parked her car around 5 a.m. and was active on social media between 5:09 a.m. and 5:23 a.m., said Detective Erik Kusmerz with the Lyon County Sheriff's Office during a Tuesday news conference.

Irion's sister, Tamara Cartwright, told CNN that Irion worked at Panasonic Energy of North America and was waiting to take the shuttle to work from Walmart.

At 5:24 a.m., surveillance video showed a man wearing a gray hooded sweatshirt, dark pants or jeans and dark tennis shoes, approaching Irion's vehicle. At 5:25 a.m. her vehicle was seen leaving the parking lot with the man driving, Kusmerz said. Police released surveillance video and photos showing the man in the parking lot.

The Lyon County Sheriff's Office released images and video of a suspect in the disappearance of Naomi Irion.

On March 15, Irion's vehicle was recovered near the Walmart and is currently being processed, Kusmerz said.

Authorities are asking for the public's help in locating a dark, 2020 or newer Chevrolet 2500-3500 High Country Silverado truck, Kusmerz said. Authorities are not providing details on the vehicle's owner.

"Please save my daughter and bring her home," Irion's mother, Diane Irion, said during the news conference. "Anything, any little, tiny bit of information, please call ... No piece of information is too small to report. At this point, we need everyone's help across the nation because the incident happened so close to I-80. She could be anywhere, anywhere in the nation."

Lyon County Sheriff's Office released an image of a vehicle, identified as a dark colored 2020 or newer Chevrolet, 2500, High Country 4 door pickup truck.

Search and rescue teams from the Lyon County Sheriff's Office and the Washoe County Sheriff's Office have conducted numerous searches in the air and on the ground, Kusmerz said. The FBI is also working with the Lyon County Sheriff's Office Major Crimes Division, he said.

Irion is 5-feet-11-inches tall with brown hair and green eyes. A missing person's flyer shared on social media shows Irion's hair is currently dyed black. She also has a septum piercing, piercings in both nostrils, and a smiley face tattoo on one ankle, Kusmerz said.

Surveillance footage of Naomi Irion, who was last seen in her car in the parking lot of a Fernley, Nevada, Walmart, authorities said.

Irion was carrying a dark-colored purse, an iPhone and Air Pods and is known to carry a Fidget spinner, Kusmerz said. She was wearing a blue Panasonic shirt, gray cardigan sweater, dark UGG-style boots and gray sweatpants, her mother said. Another search is set for Saturday.

Fernley is about 34 miles east of Reno.