A New York City teacher who poisoned her two young children with windshield wiper fluid and then drowned them has been convicted of manslaughter.

Lisette Bamenga's lawyer blamed the deaths on postpartum depression. Investigators said Bamenga acted in a jealous rage after learning that her boyfriend, a former city police officer, had fathered a child with another woman.

Bronx District Attorney Darcel D. Clark says Bamenga was convicted Friday at a nonjury trial.

She drowned 4-month-old Violet and 4-year-old Trevor in the bathtub after putting windshield wiper fluid in their grape juice in July 2012. She also turned on the apartment's stove gas.

Rescuers responding to a gas leak report found Bamenga with her wrists slit and the children lying motionless in the kitchen.