NEW DELHI — A series of church episodes over the last two months has prompted Roman Catholics here to worry about a deliberate campaign of violence, and to call on Prime Minister Narendra Modi to speak out against religious intimidation.

At least five Catholic churches in and around Delhi have reported various attacks, including suspected arson, burglary, vandalism, and stone-throwing. The latest was discovered Monday morning at St. Alphonsa’s Church in New Delhi, where a parish employee found the church’s front door broken open, ceremonial vessels missing, and Communion wafers strewn about.

The episodes have caught the attention of human rights advocates, who have been alert to any new pressure on religious freedom in India since Modi and his Hindu nationalist Bharatiya Janata Party swept to power in elections last May. But Church leaders say that the authorities have not taken the attacks seriously enough.

“There has been no attempt from the prime minister’s side to condemn the attacks,” said the Rev. Mathew Koyickal, the chancellor of the Delhi archdiocese and a former parish priest at St. Alphonsa’s. If Modi would speak out, he said, “we would be comforted, we would know we have a prime minister who cares about us.” Catholics and other Christians make up about 2 percent of India’s population.

President Barack Obama called for religious tolerance in the country during his visit in late January. “India will succeed so long as it is not splintered along the lines of religious faith — so long as it’s not splintered along any lines, and is unified as one nation,” he said in a speech on Jan. 27.

Modi’s political opponents have also taken up the issue. In December, when a right-wing offshoot of the Rashtriya Swayamsevak Sangh, or RSS, a Hindu nationalist organization, promoted conversions of Christians to Hinduism, opposition leaders called on Modi to condemn the drive.

Church leaders have speculated that the Hindu far right might also be behind the church attacks, but the Delhi chapter of the RSS denied involvement. “We do not believe in any kind of violence,” said Rajiv Tuli, a chapter spokesman.

At St. Alphonsa’s, the police said they believed the break-in was a burglary, and noted that a DVD player was taken with the two ceremonial vessels: a monstrance and a ciborium.

But parishioners said they were sure the real motive was intimidation, noting that collection boxes had been left untouched.