A Spanish-speaking boy who has confounded Canadian authorities by refusing to tell them who his family is, or where he comes from, turned vagabond again and showed up today at the Greyhound bus station in downtown Detroit.

Officials at the Traveler's Aid Society said the boy, who calls himself Gil Alberto Sanchez, would be cared for by either the Michigan Department of Social Services or Catholic Social Services, a private agency.

The boy slipped away Tuesday night from a Children's Aid Society home outside the Canadian border town of Windsor, Ont., where he had stayed since Windsor police found him begging for food on the streets Nov. 24.

"He went to bed about 11 p.m. and was discovered gone during the regular check at about midnight," said Pam Ayland, a consultant with the Children's Aid Society. "He left with out a sweater or shoes, as far as we can figure."

The boy told officials today he left Canada the same way he got there -- walking across the Ambassador Bridge between Detroit and Windsor.

But this time, he said, he told Customs officials he was an American Indian and wanted to go to Chicago. He claims to have visited Chicago on a tumbleweed journey across the country from Laredo, Mexico.

Percy Key, a Traveler's Aid case-worker, said the boy, who says he is 13 years old, walked into one of the society's offices at the Detroit bus station to ask for help.

Key said the boy was wearing shoes and a sweater, and had $7 in U.S. money when he was recognized. Where he got those items, said Ayland, is another of the boy's mysteries.