In this Thursday, Nov. 28, 2019 photo, a giraffe runs in a fire on the grounds at the African Safari Wildlife Park in Port Clinton, Ohio. At least 10 animals have died in a barn fire that erupted at the wildlife park, officials said. (Aaron DiBucci via AP)

PORT CLINTON, Ohio (AP) — The cause of a barn fire that killed 10 animals at an Ohio wildlife park remains unknown, the state fire marshal's office said Wednesday.

The Nov. 28 blaze broke out in the southwest corner of a barn at the African Safari Wildlife Park in Port Clinton, killing three bongos, three giraffes, three red river hogs and a springbok.

Springboks and bongos are types of antelope. Officials captured a loose zebra and a giraffe that escaped.

The cause is undetermined given extensive damage to the building, state fire officials said. It's also unknown whether a power outage the day before was connected to the fire.

The park is a drive-thru wildlife park, in which visitors can watch and feed animals on the 100-acre (405,000-square-meter) property. According to its Facebook page, it celebrated its 50th season in 2018.

Port Clinton is on Lake Erie in northern Ohio, between Toledo and Cleveland.

In this Thursday, Nov. 28, 2019 photo, a giraffe runs in a fire on the grounds at the African Safari Wildlife Park in Port Clinton, Ohio. At least 10 animals have died in a barn fire that erupted at the wildlife park, officials said. (Aaron DiBucci via AP)
In this Thursday, Nov. 28, 2019, photo, a fire burns on the grounds at the African Safari Wildlife Park in Port Clinton, Ohio. At least 10 animals have died in a barn fire that erupted at the wildlife park, officials said. (Aaron DiBucci via AP)
An aerial photo shows the barn that caught fire at African Safari Wildlife Park in Port Clinton, Friday, November 29, 2019.  At least 10 animals were killed in the barn fire Thursday at the African Safari Wildlife Park in Port Clinton, Ohio.  (Andy Morrison/The Blade via AP)
The gate is locked and the African Safari Wildlife Park is closed, Friday, Nov. 29, 2019, after a barn fire Thursday at the park killed at least 10 animals according to officials in Port Clinton, Ohio. Three bongos, three giraffes, three red river hogs and a springbok housed in the barn were thought to be dead, fire officials said. The cause of the fire is under investigation. No humans were injured.(AP Photo/David Richard)
A sign directs traffic to the African Safari Wildlife Park on Friday, Nov. 29, 2019, where officials say at least 10 animals were killed Thursday in a barn fire at the wildlife park in Port Clinton, Ohio. Three bongos, three giraffes, three red river hogs and a springbok housed in the barn were thought to be dead, fire officials said. The cause of the fire is under investigation. No humans were injured.(AP Photo/David Richard)
An aerial photo shows the barn that caught fire at African Safari Wildlife Park in Port Clinton, Friday, November 29, 2019.  At least 10 animals were killed in the barn fire Thursday at the African Safari Wildlife Park in Port Clinton, Ohio.  (Andy Morrison/The Blade via AP)