Tokyo (CNN) -- Police in Japan are searching for an American woman who has been missing for six weeks, they said Wednesday.
Kelli Abad, 27, was last seen October 26, leaving Kadena Air Base, a major U.S. Air Force facility in Japan, local police told CNN.
Her car, a Toyota SUV, was found three days later at Cape Zanpa on the island of Okinawa about 10 miles from the base, with her cell phone and purse inside, the Kadena police department said.
Police, the fire department and coast guard have searched caves and cliffs in the area but have found no trace of her, police said.
Her husband is stationed at the air base, police in Okinawa said.
A Facebook page dedicated to finding her shows her with two young children.
No witnesses have come forward, despite a poster campaign in English and Japanese saying she is missing, they said.
One poster has a message from her mother saying "Kelli, we love you. Please come home."
The U.S. military has been helping with the search, Kadena police said, and the Facebook page is filled with messages of support and offers to help with the search.
Junko Ogura reported from Tokyo; Melanie Whitley reported from Atlanta, Georgia.