A New York mother is mourning and in shock after the father of her children allegedly drowned their son and poisoned their daughter on Wednesday.

In the middle of the night, 47-year-old Leonardo Espinal called the mother of his children, Rosaura Abreu, threatening to kill himself. Espinal had been babysitting 7-year-old Mia and 5-year-old Stewart at his stepmother’s home in the Bronx.

After more than 10 years together, Abreu kicked Espinal out of there home about two weeks prior to the incident.

Upon receiving the worrisome call from Espinal, Abreu called the police. At around 1:30 a.m. police burst into the apartment where they found Espinal fully clothed on top of his son in a bathtub full of water. He had reportedly locked himself in the room.

Shortly after police entered the home, Espinal arrived and discovered Stewart was dead. Mia was found sleeping on a sofa in her own vomit. He admitted to police that he had put rat poison on his daughter’s pizza, adding that he had taken some himself, in an attempt at suicide.

Stewart was rushed to Saint Barnabas Hospital but was pronounced dead at 2:50 a.m. Mia survived but remains in the hospital.

“I imagine that the only reason why he would do something like that is for revenge, because she must have left him,” neighbor Francisco Medrano told the New York Post.

“She told me in the morning, ‘Leo killed my baby.’”