Sinar Harian reported that workers who thought it was a dog's carcass were shocked at what they had stumbled upon on Sunday.
Mohd Azri, 45, said he and his fellow workers then alerted the plantation management. He later lodged a police report.
Kulaijaya district police chief Supt Zulkefly Yahya said the body was sent to Hospital Temenggong Seri Maharaja Tun Ibrahim for post-mortem.
“According to early investigation, there were no signs of struggle or weapon found near his body,” he said.
“The body is suspected to be a man's but his race has yet to be identified.”