Camden County officials say it happened just before 10 a.m. Wednesday at the White Horse Pike and Warwick Road in Magnolia.
The crash involved a firetruck with the Lawnside Fire Company and a civilian vehicle. Officials said the truck was responding to an emergency when the crash happened.
Video from Chopper 6 showed multiple fire personnel and emergency responders on the scene.
Deadly crash involving firetruck in Magnolia, NJ
Crews put up a green tarp around noon at the crash scene where the vehicle remained.
"I actually saw the car go up off the ground and when I looked up, I saw the car was coming back down and I grabbed my phone and called 911," one neighbor said.
Officials tell Action News the two people who died were from inside the vehicle.
The three firefighters were taken to Jefferson Stratford Hospital with minor injuries.
The Camden County Prosecutor's Office was sending a crash team to the site to investigate.
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