The government has also demanded support of the External Affairs ministry, said IT and NRI Affairs Minister P Raghunath Reddy.
"We have sent wireless messages to the Indian embassies at Chili and Argentina seeking their support to trace Mastan Babu," the minister said in a statement today.
As per reports, Babu (40), who hails from Nellore in Andhra Pradesh, was on a solo expedition to climb the mountain range along the Argentina-Chile border from the base camp of Cerro Tres Cruces.
Babu was set to return to India on March 28.