Government on Tuesday admitted that the problem of fake currency was alarming and dangerous as some groups are trying to destabilise the Indian economy by injecting massive doses of counterfeit notes in the country.

"There are two kinds of groups, one is of individuals working for profits, but much more dangerous is the effort of injecting massive doses of fake notes in the country, trying to destabilise the economy," Finance Minister Pranab Mukherjee said in Rajya Sabha.