A pregnant Sri Lankan asylum-seeker was flown to hospital in Perth by the Royal Flying Doctor Service after suffering complications while on a boat travelling towards Christmas Island.
A call for help had been made from the boat, and the Australian Customs ship Triton went to the rescue on Saturday afternoon, at the request of the Australian Maritime Safety Authority.
They stopped the boat, with 141 people on board, about 185km northeast of Christmas Island.
The woman, along with a young boy and girl and two men were immediately brought to shore.
The remaining 137 people from the boat were taken to Christmas Island on barges from the Triton yesterday and will undergo initial security, health and identity checks.
They were mainly Sri Lankans, including women and children, but some apparently were from the Middle East.