(CNN) - A San Diego woman last seen on the island of Maui remains missing just as the search for another hiker in Hawaii enters its second week.
Khiara Henry disappeared on July 21 after renting a car in Kahului, the Maui Police Department stated in an Aug. 5 news release.
The vehicle she rented was found in the Waianapanapa Park area, but police said the 23-year-old Henry was nowhere to be found.
Family members said Henry was supposed to fly home on July 29, but she was not on the flight.
While police said they have received several leads on Henry’s disappearance, they have not been able to confirm any of them.
New surveillance footage of Henry from the car rental office was released by officials Friday, according to KHON.
Her family has offered a $10,000 cash reward for the first tip leading to Henry's safe return and/or the arrest of the person or persons responsible for her disappearance, KHON reported.
Meanwhile, the Hawaii Police Department released information on their search for missing hiker Kyle Brittain.
Brittain was last seen August 30 on the trail near Waipio Valley lookout, according to police.
He told his family he was going for a hike on the transverse trail in Waipio Valley towards Waimanu Valley, the release said.
His father, Steve Brittain, told CNN affiliate KHON that someone saw the missing hiker near a bathroom at the Waipio Valley overlook.
"He asked where the bathroom was and said, 'Hey have a good day,' and that was the last time," Steve Brittain told the affiliate.
He said his son's phone also pinged on the mountain around 8:30 a.m. on Friday before losing service, KHON reported.
Since then, search and rescue teams have trekked throughout steep and dangerous terrain looking for the missing 27-year-old from Hilo.
The police search for Brittain ended after five days, his sister-in-law Heather Lee, said.
Members of the search team that found missing hiker Amanda Eller are helping search for Brittain, according to Lee.
She thinks he is still alive and can find fruit and water in the wilderness as he awaits rescue.
Javier Cantellops told CNN by phone Sunday night that he and four teams were out searching in steep terrain and marshy areas with rough water.
Cantellops said about 30 volunteers are searching for Brittain, KHON reported.
Brittain's family has also flown in search dogs and is growing concerned about how long he's been missing, KHON reported.
"Unfortunately, we're starting to look for things we don't want to look for because it's been a week so we're starting to look in the rivers and the swamps," Brittain told KHON.
"It's been a long week, and you know the crying stopped this morning for a while and it will come back."