The body of a 10-year-old boy was recovered, and a 10-year-old girl is still missing as divers continue searching the Passaic River, according to officials.
Authorities say this person was believed to be experiencing a mental health crisis.
The dive team found the car under the US 64 bridge in roughly 30 feet of water.
They are two of the six people who lost their lives during Tropical Storm Chantal.
The two people entered the water around 5 p.m. on Sunday, and their unoccupied canoe was recovered later that evening.
The child's identity is not being released at this time, the sheriff's office says.