Maoists in Chhattisgarh have dropped pamphlets in several areas of Bastar region, opposing US President Barack Obama's upcoming visit to India.

According to police, the rebels have called for boycott of Obama's visit and a nationwide bandh on January 26.

"The pamphlets in which the outlawed CPI (Maoist) have opposed the visit of US President Obama to India have been recovered from the restive places of Narayanpur and Kanker districts," Deputy Inspector General of Police (state's intelligence wing) Deepanshu Kabra told PTI.

Central security agencies have been informed about it while police have been put on alert in the insurgency-affected region, Kabra said.

The pamphlets released in the name of Naxal's Dandakaranya Special Zonal Committee spokesperson Gudsa Usendi with heading 'Obama Wapas Jao' (Obama go back) carry several anti-national messages and contents.

In the pamphlets, the ultras have also said that they will burn effigies of Obama and Prime Minister Narendra Modi during the US President's visit to the country.

Obama will be on three-day visit to India from January 25 during which he will also attend the 'Republic Day' parade in New Delhi.