The fourth passenger in a van that rolled into a Bridgeport pond on the Fourth of July died Thursday.

Investigators say the incident began when 39-year-old Michelle McIntosh, of Bridgeport, got out the vehicle to speak with a family member when the van began to roll down a hill. McIntosh managed to jump back in, but was unable to stop the vehicle from sinking into the pond.

The Bridgeport Police Department's scuba team removed McIntosh, along with three children, from the van. Investigators say the vehicle was submerged in 15 to 20 feet of water.

McIntosh later died as a result of the incident. Her 2-year-old son, David, and a family friend, 3-year-old Julia Boyd, were pronounced dead on Wednesday. McIntosh's nephew, 6-year-old Jayden Wilson, succumbed to his injuries Thursday.

McIntosh's husband, David, told News 12 Connecticut that it appears his wife had lost consciousness before the car hit the water. According to the husband, that information came from a nurse.

Michelle left behind three other children. ?I don't know what I'm going to do now. I still have three other girls to look after. I'm trying to figure out how I'm going to raise three girls,? David said.

Police are trying to determine how the minivan rolled down a hill and into Bunnell's Pond. Officials said they will be on the scene throughout the next week or two.

As they continued to investigate the scene Thursday, residents flocked to the site to set up a memorial and pay their respects.

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