Rewards totalling RM60,000 have been offered for information leading to the capture of those who killed three orang-utans in Malaysia, a report said today.

The orang-utans named Mambo, Terry and Marrie were found dead with stab wounds at the ShangriLa Rasa Ria resort's nature park in Malaysia's eastern Sabah state on Borneo island on August 18, the Sunday Star reported.

Another two orang-utans which were injured in the attack were being treated at the Sepilok orang-utan rehabilitation centre in Sandakan.