Police say a mom threw her 5-year-old son off the balcony of a Miami high-rise building, then jumped to her own death.

Emergency crews responded to reports of a “jumper” Monday evening at Rise Brickell City Centre condos and discovered a mother-son duo dead, news station WSVN reported.

The 37-year-old woman, whom relatives identified as Solanye Virginia Matos, was unresponsive in shrubs, according to Telemundo.

Her child was found on the building’s sixth-floor terrace and rushed to Jackson Memorial Hospital, where he was pronounced dead, according to officials.

Police said the incident is being investigated as a murder-suicide.

Investigators believe the mom killed her son by throwing him from around the 20th floor before she jumped.

The victims’ family said there were no warning signs that the mom planned to harm her son, WSVN reported.