A Taiwanese woman drowned her seven-day-old son and then dumped the body in maggot-infested bushes. In this image, a mother holds the foot of her newborn baby at the hospital in Nantes, western France, July 7, 2018 LOIC VENANCE/AFP/Getty Images

A Taiwanese woman drowned her seven-day-old son and then dumped the body in maggot-infested bushes.

The body was found in a red plastic bag Saturday. It was badly fed on by maggots and only one of the calves could be used in DNA identifications tests.

Prosecutors believe that the 21-year-old mother, surnamed Laiu, wanted to take revenge on her ex-boyfriend who left her after learning about her pregnancy and also refused to help raise the child.

Liu gave birth to the baby at a local clinic on Dec. 15, 2018. Seven days later, she drowned him in a sink filled with water and then discarded the body in the bushes, the Apple Daily reported.

Police and social workers visited Liu’s home on Feb. 23 after she was found to have violated Taiwan’s Household Registration Law under which all the children were required to be registered within 60 days of birth. The clinic where Liu delivered the baby informed the authorities.

While speaking to police, Liu initially denied having given birth and said she went to the clinic for a tumor removal. However, upon further questioning, she confessed to the crime and said she killed the baby to take revenge on her ex-boyfriend. The woman also added she did not want her parents to know that she had gotten pregnant before marriage and hence couldn’t afford to raise the baby alone.

"I don't plan to keep the child, also I couldn't afford to," she told the police.

She was arrested and charged with murder. Investigations revealed Liu had given birth to another baby at the age of 17. The child was, however, handed over to her then-boyfriend’s family to raise.

In a similar incident in October in 2018, a woman was accused of drowning her infant son in the bathtub in Arizona. The 19-year-old mother, identified as Jenna Folwell, admitted the crime as she “did not want to hear her son cry.”

Investigations revealed the woman had planned the baby’s murder. The search history on her phone revealed the mother had checked for “ways to die instantly," “how long it takes babies to drown” and “reasons parents kill their babies” on the internet. She was arrested and charged with first-degree murder, AZ Family reported.