A newborn baby has been found in a plastic bag with a rusty knife sticking out of her back.
The tiny girl thought to be just two days old was found with knife wounds, wrapped in a blanket and stuffed into a plastic bag.
Her cries alerted a passerby to her plight in the city of Posadas in the north-eastern Argentine province of Misiones.
Gym instructor Diego Sebastian Penayo, 31, found the baby wrapped in a blue and pink blanket inside a black plastic bag.
The baby had a knife sticking in her back but still displayed vital signs, reports said.
Mr Penayo took the baby girl to a nearby police station and she was later transferred to the Paediatric Hospital for treatment.
Doctors estimated the baby was barely two days old, and they found multiple knife wounds on her tiny body.
News site Clarin said the rusty blade was still protruding from the infant’s back when she was discovered.
Police reportedly identified the baby’s mum and arrested her.
Police told Clarin the unnamed woman “gave birth and left Hospital Dr. Ramon Madariaga Treble to go to a nearby street, where she abandoned the newborn girl”.
David Halac, a spokesperson for Hospital Dr. Fernando Barreyro, told the newspaper Cronica that the baby had a rusty knife in her back along with several other injuries.
He added: “The baby is currently stable and we believe that she will survive.”
Halac said the stab wounds were mostly superficial and had not damaged any organs.
Hospital workers have decided to call the baby Esperanza (Hope).
It is unclear whether the detained mother faces charges.