CANBERRA, Australia — The Australian government is considering intervening in the case of a sick Down syndrome baby left with a Thai surrogate mother by Australian biological parents.

Pattaramon Chanbua, a 21-year-old food vendor in Thailand's seaside town of Sri Racha, is taking care of her 7-month-old surrogate baby, named "Gammy," who also has a congenital heart condition. The parents, who have not been identified in the media, took his healthy twin sister back to their home on Western Australia state.

Immigration Minister Scott Morrison told Sydney Radio 2GB on Monday that his government is "taking a close look at what can be done,"

Morrison's spokesman Julian Leembruggen later declined to say what type of intervention the government is considering.