A semi-truck carrying circus animals caught fire Saturday, leading to the unexpected release of camels, zebras and horses onto an Indiana highway, the Grant County Sheriff's Office said in a statement.

The incident began shortly after 2 a.m. when Officer Edward Titus found a 2012 Volvo semi-truck on fire. The driver, Armando C. Alvarez, 57, had already evacuated the vehicle by the time Officer Titus arrived. according to to the Grant County Sheriff's Office.

Upon closer inspection, it was determined that the truck was transporting animals from the Shrine Circus. The rescue was led by Titus Police Officers, Grant County Deputy Joshua Kennedy, and members of the circus, according to a press release. They managed to save five zebras, four camels and a miniature horse. (Related: Big Boy Bison goes on a rampage in Yellowstone, ruining tourist cars)

The assistance of additional law enforcement officers ensured the safe containment of the animals until replacement transport vehicles from the circus arrived, the police statement further added. Highway lanes were reopened by 6:30 a.m. after the chaotic scene was cleared. An investigation led by Constable James Wilkison pointed to equipment failure as the cause of the fire.

Officer Titus and Officer Kennedy were treated for smoke inhalation at a local hospital and subsequently released. The Grant County Sheriff's Office said neither Alvarez nor the animals were injured in the ordeal.

Residents praised police officers who immediately cleared the highway. “Great job first responders! Bravo,” one Facebook commenter said. “Wow, that's a story to be told for years,” added another user.