NEW DELHI — A popular Indian yoga guru fasted for a fourth day Sunday and threatened to expand his anti-graft protest nationwide if the government doesn't act decisively to bring back billions of dollars of ill-gotten money that Indians allegedly have stashed abroad.

Baba Ramdev told thousands of cheering supporters at a sprawling fairground in the capital that he would announce an action plan on Monday to "intensify the protest across the country in the form of a people's revolt."

He asked his supporters to be ready to accept arrest, but urged them to be peaceful and shun violence.

"I will be the first person to go to jail and you follow me," he said.

Ramdev and his supporters say they haven't eaten for three days to pressure the government to accept their anti-corruption demands, including the creation of a powerful ombudsman to check government officials, an independent Central Bureau of Investigation, and actions to prevent tax evasion and the illegal stashing of money in overseas banks.

On Thursday, the government said a committee was working on a draft of an ombudsman bill that would be submitted to Parliament next month. The finance ministry is in the process of tightening laws to curb illegal transfers of money abroad.

Ramdev started his protest less than a week after anti-graft crusader Anna Hazare halted a separate hunger strike that failed to attract widespread support. Hazare and his backers said they would give up agitating and join politics instead.

Crowds have dwindled at the site of Ramdev's fast over the past three days.

Millions of Indians tune in every day to watch Ramdev perform yoga exercises on his popular TV show. In the past few years he has used his popularity as a yoga guru to highlight his campaign against corruption.

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  • Baba Ramdev At Gandhi Memorial

    Indian Yoga Guru Baba Ramdev pays homage at Rajghat, the memorial to late Mahatma Gandhi, before relaunching his anti-corruption protest in New Delhi, India, Thursday, Aug. 9, 2012. Ramdev on Thursday relaunched his indefinite agitation to press the government to act against widespread graft and bring back hundreds of billions of dollars stashed overseas. (AP Photo/Altaf Qadri)

  • Baba Ramdev

    Indian yoga guru Baba Ramdev gestures as he speaks to his supporters at an anti-corruption protest in New Delhi, India, Sunday, Aug. 12, 2012. Ramdev fasted for a fourth day Sunday and threatened to expand his protest nationwide if the government doesn't act decisively to bring back billions of dollars of ill-gotten money that some Indians have allegedly stashed abroad. (AP Photo/Rajesh Kumar Singh)

  • Supporters

    Supporters of Indian yoga guru Baba Ramdev shout slogans at a mass anti-corruption protest in New Delhi, India, Saturday, Aug. 11, 2012. Indians shouted slogans and listened to a rousing speech from a yoga guru who began a three day fast Thursday to pressure the government to bring back billions of ill-gotten gains - so-called black money - citizens have stashed in foreign banks. (AP Photo/Tsering Topgyal)

  • Performing Yoga

    Supporters of Indian yoga guru Baba Ramdev perform yoga during an anti-corruption protest in New Delhi, India, Friday, Aug. 10, 2012. Indians shouted slogans and listened to a rousing speech from a yoga guru who began a three day fast Thursday to pressure the government to bring back billions of ill-gotten gains - so-called black money - citizens have stashed in foreign banks.(AP Photo/Altaf Qadri)

  • Performing Yoga

    Supporters of Indian yoga guru Baba Ramdev perform yoga during an anti-corruption protest in New Delhi, India, Friday, Aug. 10, 2012. Indians shouted slogans and listened to a rousing speech from the yoga guru who began a three-day fast Thursday to pressure the government to bring back billions of ill-gotten gains - so-called black money - citizens have stashed in foreign banks. (AP Photo/Altaf Qadri)

  • Ramdev

    India yoga guru Baba Ramdev waves the tri-color national flag during a mass anti-corruption protest in New Delhi, India, Thursday, Aug. 9, 2012. Tens of thousands of Indians shouting patriotic slogans massed at a New Delhi fairground Thursday to support a charismatic yoga guru's anti-corruption hunger strike and pressure the government to bring back billions of dollars of illegal money stashed in foreign banks. (AP Photo)