The Luz en tu Senda Church in Riverhead caught fire just after 2:20 a.m. Saturday.
No one was in the church at the time, and there were no injuries.
The church did sustain damage.
Investigators subsequently determined the fire was started by a male suspect.
Surveillance video led them to 33-year-old Lee Ragland of Riverhead.
Ragland was arrested and charged with third-degree arson, a felony.
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