Cops arrested a 66-year-old man for leaving threatening notes at a Catholic church in the Bronx — one of which said “Koran tells Muslims to cut off the head and fingertips of disbelievers,” police sources said Wednesday.

The letter found at St. Barnabas Church on East 241st Street in Woodlawn on Tuesday also said, “Koran is the direct word of Allah to Mohammed via the Angel Gabriel.”

It was the second hate note found at the church this week. Another folded missive was handed to Father Anthony Mizzi-Gili as he greeted parishioners outside the church around 6 p.m. Sunday, the sources said.

It “referenced Mohammed and the slaying of unbelievers,” a source said.

Basil Boland, of Yonkers, was arrested around 7 p.m. Tuesday and charged with making terroristic threats and aggravated harassment.

Mizzi-Gili declined to comment.