Fire officials and police are investigating what they're saying was arson at an Ocean County amusement park overnight Monday.
The initial blaze ignited inside a utility shed at the Six Flags Great Adventure's Safari Off-Road Adventure in Jackson, New Jersey, just after 10 p.m. Monday.
Two antelopes were inside the shed at the time, according to officials. They managed to escape unharmed.
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As flames inside the shed were brought under control, four other small fires burned in a wooded area nearby forcing firefighters to cut through a fence to get close enough to extinguish the fires, officials said.
Firefighters had to cut through a fence to get close enough to extinguish the fires, officials said. All of the fires were brought under control in about 20 minutes. The utility shed was completely destroyed.
"It suggests that a person or persons were engaged in some kind of serial arson activity last night," said Jackson Police Chief Matthew Kunz.
Safari Off Road Adventure is a 350-acre preserve and serves as home to approximately 1,200 animals from six continents.
None of the animals were injured in the fires.
The cause of the blazes isn't known at this time, but officials tell NBC10 they believe the fires were intentionally set.