The killing of a rare Tasmanian devil on loan from Australia has prompted beefed-up security at a New Mexico zoo and a $5,000 reward for information leading to an arrest.

The Albuquerque Journal reports that the Albuquerque BioPark Zoo is adding more guards and surveillance cameras following the death of the animal named Jasper at the zoo last week.

An examination concluded that Jasper died from a fractured skull and brain trauma. A piece of asphalt was found nearby.

The animal was one of four Tasmanian devils loaned to the Albuquerque zoo by Healesville Sanctuary in Australia as part of an effort to start a breeding program for the endangered species.

A zoo booster group and a city anti-crime program are offering the $5,000 reward.