A Chicago mother on Thursday killed her toddler before throwing her baby, and then herself, from an 11th-floor apartment in a double-murder and attempted suicide, police said.

Aleah Newell, 20, and her 7-month-old son Amir were found on the ground outside their South Shore building just before 2 a.m. on Thursday, WGN-TV reported.

When officers got to Newell’s apartment, they discovered her 2-year-old son Jontavious unresponsive in a bathtub, with cuts on his face and blisters from the scalding water, the report said.

Cordell Walker, who is believed to be either Newell’s 70-year-old father or grandfather, was found alive, with cuts on his face and body.

Police said the young mom stabbed Walker before leaping from the building.

Both of her sons were pronounced dead at Comer Children’s Hospital. They were the Windy City’s first homicides of 2020, according to the outlet.

Newell and Cordell were taken to the University of Chicago Medical Center in critical condition. Neither was conscious on Thursday evening.

Relatives told the outlet that Newell downed some pills before attacking her children and Walker. Her brother killed himself in 2017, they said.