The crash in Briarcliff Manor claimed driver Diane Schuller, 36, as well as her 2-year-old daughter, Erin, and three young nieces. Three men in the car she hit also died.
The minivan belonged to Schuller's brother, Warren Hance. Schuller apparently told him in a phone call about two hours earlier that she was feeling ill, state police said at a news conference. Hance told her to pull over and said he would go to get her. It's unclear where she was at the time or exactly what occurred after that.
Six people called police to say a driver was going the wrong way.
Besides the Schullers, the crash killed Hance's three daughters: Emma Hance, 9; Alison, 7; and Kate, 5. Schuller's son, Brian, 5, was in stable but critical condition at Westchester Medical Center, reports Lohud.com.
The other victims were headed to a family party: driver Guy Bastardi, 49; his father, Michael Bastardi, 81; and Daniel Longo, 74.
Police said that they hope to learn more from an autopsy and toxicology reports, but at this point do not believe drugs or alcohol were a factor in the crash, according to Lohud.com.