Environmental groups in Bangladesh are up in arms against a U.S.-based oil giant for allegedly destroying a natural forest while exploring for oil and gas near the northeastern frontier with India, official sources said.

The seismic surveys conducted by the Chevron oil company caused irreparable damage to the Lawachhara forest, located near the tea terraces of Sylhet province, said Zillur Rahman Siddiqui of the Society for Environment and Human Development.

"Lawachhara is the home to several rare species, including the Holoock Gibbon (known locally as Ulluk), which is also under serious threat from poachers," said Siddiqui, a former university teacher.

Another environment activist, Anu Mohammad, blamed Chevron for carrying out explosions which blasted the serenity of the forests.

"Chevron has been stealing our forests indiscriminately," Mohammad said.

The multinational has frequently been accused of harming the ecology of the lush valleys of Habiganj district, looking for oil under a contract between Bangladesh’s Petrobangla and Chevron.

The Bangladesh Environment Association called on the interim government to cancel the agreements with Chevron and seek compensation from the oil company.

The Lawachhara forest, which is popular among nature lovers, is the habitat of 167 plant and animal species, including birds.