"The teenagers were handed over to police by their parents at Kolasib in northern Mizoram earlier this week after they confessed their crime," a police spokesman told reporters.
Police said the youths, aged 14-17 years, were students at a school in Kolasib, 145 km north of the state capital.
"The youngsters sneaked out of their hostel during night and collected Bibles and hymn books from three different churches before burning them at a nearby auditorium," the official said.
"As they were under 18 years of age they were sent to a juvenile home," he added.