The theft occurred sometime between Friday and Sunday and was reported to police Monday, Wilton police said.
Our Lady of Fatima Church is located at 229 Danbury Road/Route 7.
A suspect was recorded on the church's surveillance camera, Wilton police said. The white man appears to be between 40 and 50 years of age and about 5 feet, 8 inches tall with a medium build.
The man has gray hair and was wearing a green jacket with blue sweatpants that had a stripe down the side.
Anyone with information is asked to contact Wilton Police at 203-834-6260.
Click here to follow Daily Voice Wilton and receive free news updates.