Investigators say they found the origin, but have not yet released any further details including how the fire was set or if any suspects have been identified.
NJ forest fire consumes 170 acres; at least 29 buildings damaged
The fire broke out Sunday afternoon and quickly spread to consume more than 160 acres.
A firefighter is recovering from a heart attack, three homeless people needed to be rescued, and more than two dozen buildings were damaged.
New Jersey driver captures massive NJ forest fire
"This remains an active and ongoing investigation, and anyone with knowledge of information concerning this fire is urged to contact Sergeant Thomas Haskell of the Ocean County Prosecutor's Office at 732-929-2027, extension 3953," Prosecutor Bradley Billhimer said in a statement.
Firefighters battling brush fire in Salem County, NJ