NEW ULM, Minn. (AP) - Authorities say there were no overnight developments in the search for a Minnesota woman and her 13-year-old son on the run from court-ordered cancer treatment for the boy.

The Brown County sheriff's department says the search for Colleen Hauser and her son Daniel is still focused in southern California and Mexico.

Daniel has Hodgkin's lymphoma and is refusing chemotherapy treatment.

Doctors say Daniel has a cancerous tumor growing in his chest that's likely to kill him without chemotherapy, but the family prefers natural healing methods.

The American Cancer Society estimates there are 35 to 50 clinics in Mexican border towns that attract cancer patients looking for alternatives.