Malaysia returns four orangutans to Indonesia

"It was found that these four orangutans were different from the other species," Mohamad Nawayai Yasak, director at the zoo in western Malacca state, was quoted as saying by The Star.

Mohamad Nawayai said two of the orangutans -- named Dodi and Linda -- have been at the Malacca zoo for the past five years while the other two, Mamat and Minah, were seized from a theme park recently.

"There were no details of how they were acquired," the zoo director said.