The fire broke out on the roof of 322 Franklin St., just after 2 a.m., and had risen to a third-alarm by 2:20 a.m., fire officials said.
Firefighters fro tour #3 worked around the Honda sedan parked directly in front of a hydrant on the other side of the street, draping the hose over the vehicle.
"Blocked hydrants significantly slow down or completely limit our ability to get water on the fire quickly," Elizabeth NJ Fire Officers IAFF Local 2040 wrote on Facebook.
The fire was knocked down in under an hour, fire officials said.
No injuries were reported and the cause was unknown as of Sunday afternoon. It was also unknown if the car blocking the hydrant was ticketed.
Agencies from Garwood, Kenilworth, Unión, Roselle Park and Elizabeth responded.
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