Maharashtra Chief Minister Devendra Fadnavis said on Thursday that `hydro` ganja is proving to be a big challenge for the government and asserted that the Centre and state have intensified their fight against the drug business, reported news agency PTI.

Replying to a calling attention motion in the legislative council, he also raised concerns over synthetic drugs and said that even terminal cancer patients are being used as drug carriers.

The number of cases has increased because of the government`s anti-drug crackdown, he said.