UPDATED: 6:55 p.m.
Police say at approxiatemly 9:40 a.m., the car plunged into the water.
When first responders arrived, they found a 16-year-old girl who confirmed that she had been inside the vehicle.
Police say she confirmed that the driver of the car, an 18-year-old male, initially helped her out of the car. When she was safe, he went back into the water in an attempt to help the remaining three passengers — a 16-year-old male, a 12-year-old male and a 6-year-old male.
Soon after first responders arrived on the scene, they located that 18-year-old male, and he was pronounced dead on the scene.
At around 3 p.m., authorities found the car. They were able to bring the car out of the canal at around 5 p.m., which was when authorities found the 16-year-old male and 12-year-old male in the car. They were pronounced dead.
The 6-year-old remains unaccounted for.