hundreds of Catholic devotees and other curious residents flocked to the shrine in a nondescript Mumbai suburb to watch the hypnotic drip. Some even drank the droplets.
Edamaruku was challenged to investigate and so he went to the site with an engineer friend and traced the source of the drip backwards. Moisture on the wall the statue was mounted on seemed to come from an overflowing drain, which was in turn fed by a pipe that issued from a nearby toilet.
The "miracle" was simply bad plumbing, he said.
It was then that the situation turned ugly.
He presented his case in a febrile live television debate with representatives of Catholic lobby groups, while outside the studio a threatening crowd bearing sticks had gathered. He claims they were hired thugs.
For some Catholics the veracity of the miracle is no longer the point. Edamaruku, they say, insulted the Catholic church, by alleging the church manufactured the miracle to make money, by claiming the church was anti-science and even casting doubt over the miracle that ensured Mother Theresa's sainthood.
In the following weeks, three police stations in Mumbai took up blasphemy cases filed against him by Catholic groups under the notorious Section 295a of India's colonial-era penal code.
Section 295a was enacted in 1927 to curb hate speech in a restless colony bristling with religious and communal tensions. It makes "deliberate and malicious" speech insulting to religion punishable with up to three years in prison and a fine. However, some say it is frequently abused to suppress free speech.
"Under this law a policeman can simply arrest me even though there has been no investigation... they can just arrest me without a warrant and keep me in prison for a long time… That risk I do not want to take," says Edamaruku.
He applied for anticipatory bail, which would prevent police taking him into custody before any investigation - but this was rejected. At the same time, he says, he was getting threatening phone calls from policemen proclaiming their intention to arrest him and telling him that unless he apologised the complaint would never be withdrawn.
Threatening comments were posted on an online forum, he says, and contacts in Mumbai told him they had heard talk of somebody being hired to beat him in jail. Catholic groups say they aren't behind any threats Mr Edamaruku may have received.
