According to the Ventura County Sheriff's Office, Kaylee Rebert, 14, and Nicholas Marino, 13, were reported missing by their families around 1 a.m.
Marino was first reported missing. As deputies searched for the teen, they went to the home of his girlfriend, Rebert, and discovered she was also missing.
"I want you to know that we love you and miss you and you're a huge part of our family," Chris Marino, Nicolas' mom said. "Please make good decisions. Please call us or contact us if you can."
"Kaylee we love you and miss you and we've never been so concerned for your safety," Don Rebert, Kaylee's father said.
Ventura County's Search and Rescue team scoured Wildwood Regional Park Thursday after canines and bloodhound dogs led authorities to the area. The search effort was conducted on foot, motorcycles, and from the air.
Wildwood Regional Park is a 2,000 acre popular hiking and biking area located at the west end of Avenida De Los Arboles in Thousand Oaks. Officials say the missing teens, who are believed to be dating, are very familiar with the park.
One of the teens was reportedly spotted at the park Wednesday just before they were reported missing.
Officials do not believe the kids were kidnapped but instead left their homes by choice.
"There is a belief that the two got together," Sgt. Barbara Payton, Ventura County Sheriff's Department said. "They are boyfriend and girlfriend and there is an indication that they are together."
Officials said the teens are considered at risk, and possibly suicidal, based on information gathered during the investigation.
No further information was released regarding what led authorities to that information.
Detectives have been handing out fliers with pictures of the missing teens.
"We love you. Make good decisions and please come home, Chris Marino said."
"We just want you to come home. You're not going to be in any trouble Kaylee. We just want to come home safely. Lula, Derek, and Toby need you," Don Rebert said. You're mom and I need you."
Anyone with information on the missing teens' wherabouts were urged to contact the Ventura County Sheriff's Department at (805) 654-9511.