Meanwhile, the toddler, who escaped death by a whisker, has been handed to her mother while the case is being handled by local social services to ensure the child is safe.
But the reunion took a turn when Katie Pladl got pregnant with her father's baby, authorities allege.
The father will appear in the New Brighton Magistrates Court on Monday on a charge of attempted murder. But that is no longer going to happen.
Anthony Fusco adopted Katie in 1998. "This is a tragedy for everyone involved", Steven Pladl's attorney said.
Speaking to News24, Nelson Mandela Bay metro police officer Luyolo Nojulumba says the first things that came to his mind was to ensure that the toddler did not fall. He had apparently fatally shot himself.
However, before the police officer could grab the father, the baby was hurled into the air.
He fired into the auto they were in from his vehicle, police said.
It all began about two decades ago.
Katie Pladl was given up for adoption after she was born.
The fact that other protestors on the ground, were reportedly shouting at the father "throw, throw, throw", makes the entire episode even more appalling. "We are all heartbroken", Pladl's attorney told CBS 17. Katie Pladl was staying with her adoptive family in NY after she bonded out.
The caller then said Steven admitted to killing his wife and her father.
But, the plan was shattered when Steven and Katie Pladl were arrested in January at their home in Knightdale, North Carolina, after warrants were issued in Henrico County, Virginia, the Richmond-Times Dispatch reported.
Steven Pladl, 43, a day after his daughter Katie Pladl, 20, broke up with him over the phone drove to NY on Thursday with their young son Bennett, shot and killed her, and her adoptive father, 56-year-old Anthony Fusco, with an AR-15 semi-automatic rifle.
That night, Steven picked up the baby, who had been in his mother's care in Cary, North Carolina, according to the call.
In that call, Steven's mother told the dispatcher her son had killed the baby. He said police were searching for the suspect's vehicle, a Honda minivan, which they found in Dover with Steven Pladl dead inside. "He told me to call the police and I shouldn't go over there". The infant, 7-month-old Bennett Pladl, was found dead in a Knightdale residence during a welfare check at a home on Earlston Court. Warrants say their child was born in September 2017.
About 20 minutes earlier and roughly 600 miles away, police in New Milford, Connecticut, had also been called to a crime scene.
Around 8:40 a.m. on Thursday, Steven Pladl, 45, pulled up next to the victims' vehicle at Highway 55 and Route 7 in New Milford, Connecticut, and fired several rounds from a rifle into that vehicle, Boyne said.
Capps said Pladl drove to the NY "for the specific objective of making some confrontations".