The 15-year-old Somali immigrant flew back to California over the weekend and was being cared for by Santa Clara County Child Protective Services, police spokesman Albert Morales said Monday.
"There are plans to speak to him," said Morales, but he said he didn't have a time or location.
Yahya Abdi's father, Abdilahi Yusuf, who drives a taxi in San Jose, flew to Hawaii last week to bring his son home, but child welfare officials there turned the boy over to their California counterparts.
Law enforcement agents hope to question Abdi about how he climbed over a fence at San Jose International Airport. He then got into the wheel well of a Boeing 767 and survived the April 20 flight at 35,000 feet despite freezing cold and a lack of oxygen.
Authorities have searched the perimeter and found no signs of anyone going over or under the fence. A review of video surveillance also didn't show Abdi, but there are gaps in the coverage. As a result of the breach, the airport is adding more cameras.
Abdi, who lived in Santa Clara with his father, stepmother and siblings, had been unhappy in California and desperately missed his mother, according to those who know his family. School officials said he had been in the U.S. for about four years and speaks English as a second language.
Abdi's mother lives in a refugee camp in eastern Ethiopia. Ubah Mohammed Abdule told The Associated Press that the boy longed to see her, but couldn't because his father told him she was dead and didn't allow contact.
The boy's siblings have told local media that their mother was lying, and that the father didn't take the children away from her or mistreat them. School officials said Abdi arrived in the U.S. about four years ago.
James Livingston, a San Jose psychologist who works with refugees and adolescents, said Monday that it's not surprising that a teen in Abdi's situation would be having a hard time.
"It is always a difficult adjustment for refugee children coming from another country and culture and speaking a different language to make the adjustment in this country," he said. "It's not surprising if he would start to miss the home country no matter how bad the situation is there."
Livingston, who doesn't know Abdi, said it doesn't surprise him that authorities have not immediately returned the teen to his father.
"It's the responsibility of social services to investigate any possibility of his home not being a safe environment before returning that child to that environment, so I would assume they are being thorough before returning the boy to his dad," he said.