Police are searching for two suspects who broke into a Boise zoo and apparently killed a monkey, according to a NBCNews.com article.
The break-in occurred early Saturday, the article said.
Two males wearing dark clothes were spotted around 4:30 a.m., and fled the scene as soon as they spotted the guard, according to a Jacksonsun.com article.
Police searched the zoo, once with a thermal imager, but no one was found, the article said.
Police found blood at the found, and are still trying to determine if it was monkey or human blood, according to a ChicagoTribune.com article.
Police had no motive for the crime, the article added.