Guwahati (Agencies): Six officials of World Wide Fund for Nature (WWF) were kidnapped by armed militants from Manas National Park in Assam, officials said.

Officials from the international conservation group, including three women were abducted late on Sunday from the sanctuary, said a police spokesperson.

"A group of about 20 armed militants kidnapped the six WWF officials, including three women members, while they were carrying out tiger and elephant counting and monitoring exercises inside the Manas National Park area," Kampa Borgoyary, deputy chief of the Bodoland Territorial Council (BTC).

The identity of the militants is not immediately known.

"A massive hunt is on to rescue the kidnapped WWF officials," Borgoyary said.

At least three militant groups are active in the area - the outlawed National Democratic Front of Bodoland (NDFB), the Adivasi Cobra Force, and the Birsa Commando Force.

"The gunmen were all masked. We are taking the help of locals in the rescue mission," the BTC deputy chief said.