© The Associated Press FILE - In this Nov. 10, 2016 file photo, discontinued Indian currency notes of 1,000 denomination are seen after they were deposited by people at a bank in Bangalore, India. Indian prime minister Narendra Modi, in his Nov. 8 televised address, announced the demonetization of India’s 500 and 1,000-rupee notes, which made up 86 percent of the country’s currency. There are doubts about whether the demonetization drive will truly make an impact on corruption and tax evasion. India’s underground economy is so big it accounts for up to a quarter of the country’s gross domestic product. And many of those possessing piles of black money have come up with ways to save much of it without drawing government attention. (AP Photo/Aijaz Rahi, File)

LUCKNOW, India — The engineer was in the middle of his evening meditation session when a colleague called and told him to turn on the television. The prime minister was saying most of India's cash would hold no value by morning.

The objective was to rid the country of illegal "black money" for which taxes had not been paid. Money often associated with illegal activity such as bribery. Money like the 4.8 million rupees ($70,000) stashed in a steel trunk, under a makeshift settee, in the engineer's bedroom.

"For first few minutes I could not understand," the engineer said, speaking to the Associated Press on condition of anonymity for fear of prosecution.

The engineer, employed by the public works department of northern Uttar Pradesh state, and many of his colleagues had amassed piles of cash by taking bribes for public contracts — a practice so common it has become accepted by many as part of the price of doing business in India. They felt confused — even betrayed — by the government cracking down.

"A bribe is not a taboo in a government job," the engineer said.

Modi, in his Nov. 8 televised address, announced the demonetization of India's 500- and 1,000-rupee notes, which made up 86 percent of the country's currency. He said it would wipe out rampant corruption, though in a country of 1.3 billion where most people don't have bank accounts, it also wiped out legally collected savings.

"With this decision we have, in one stroke, hit at the root of the sources of corruption," Finance Minister Arun Jaitley told TV channel Doordarshan a day after Modi announced the demonetization. "We have freed up the country from these sources of corruption."

Demonetized currency can be deposited in banks, but immediate access to those funds is severely limited and the government said it will severely penalize those who deposit amounts that don't match their income. Anyone depositing more than 250,000 rupees ($3,700) over the next two months will be flagged for tax inspection.

On the phone with friends, the engineer said, "I sensed desperation in their voices. I knew they also had bribe money" in amounts high enough to raise red flags.

Did he feel shame, or guilt? No.

Full coverage: War on Black Money

"Taking this extra money as commission is a necessity" just to meet expected payments and to advance in one's field, he said while calmly sipping whisky and adjusting the light from an overhead chandelier by remote in his home in Lucknow, the state capital.

Each festive season, he said he's expected to offer costly gifts like wristwatches, fine suits and gold pendants to his superiors, and even their sons. "One needs to keep them happy. ... but would you expect me to give a gift from my salary? No, never."

The engineer said the bribes he accepts are most often already written into price estimates for projects like road construction as a so-called commission. "You do not have to ask for it," he said.

Illicit money changes hands at nearly every project stage, from the public tender to completion. Almost everyone benefits from the "commissions," from the highest ministers to the rank and file, he said.

"What I get as bribe is nothing compared to what others take," he said, noting the palatial homes near his more modest house in an up-market Lucknow neighborhood. "I have a small hatchback car while others roam around in sedans and SUVs. Don't our superiors notice this?"

Graft in India is so accepted that it is out in the open. On Sept. 4, another Uttar Pradesh bureaucrat named Ashok Kumar told reporters in the town of Basti, southeast of Lucknow, that he was giving up on becoming a district magistrate because he did not have 7 million rupees ($103,000) to pay the bribe. Kumar was suspended from his job in the National Integration Department after making the statement, though he never revealed who would have been taking that bribe.

The fight against corruption has been frustrating for retired bureaucrat S.P. Singh, who spent more than 30 years in India's civil service trying to rid government departments of graft.

"The tendency to take bribe stems from a desire to have best in life," he said. "The lure of lucre is so intense."

Part of the problem, he said, was that politicians were in cahoots with bureaucrats to keep bribery schemes secret. "A bureaucrat helps an illiterate politician in making money by bending rules. Acting as conduit, he ends up thinking, if a minister can make money why not he," Singh said. "The rot has set in."

On Tuesday, Modi lambasted critics of the demonetization drive by saying they want graft to continue.

"Values in public life are eroding... I see that people in public life are giving speeches in support of corruption and black money. They are brazenly out in open doing so. In any country, erosion in values is the biggest crisis," he said during a book release event in New Delhi, according to Press Trust of India.

Yet there are doubts about whether the demonetization drive will truly make an impact on corruption and tax evasion. India's underground economy is so big it accounts for up to a quarter of the country's gross domestic product. And many of those possessing piles of black money have come up with ways to save much of it without drawing government attention.

Some have bought gold, sending gold prices soaring. Some were buying U.S. dollars or euros. Some have used cash for down payments on new apartments, with obliging real estate firms back-dating the invoices to before the currency overhaul. Some have bought expensive first-class train tickets to be canceled later for cash, once enough new notes are printed.

The engineer, despite his initial panic, said he did manage to find a way to launder his savings. What was it? He won't say.