BATON ROUGE, La. (BRPROUD) – On Monday morning, the front porch of a building on Plank Road was intentionally set on fire, and fire department investigators say the suspect was captured by an off-duty deputy.

It was 8:56 a.m. when the Baton Rouge Fire Department was called to the 3000 block of Plank Road, where they swiftly put out the blaze, according to a news release.

Investigators examined the scene and determined it was an act of arson. An eyewitness reportedly told investigators that they saw John Plaisance, 30, set the fire before they called 911.

BRFD says an off-duty East Baton Rouge Sheriff’s Office deputy was driving by and stepped in to help. The deputy took Plaisance into custody until Baton Rouge Police arrived.

BRFD investigators booked Plaisance into BRPD 1st District and then brought him to East Baton Rouge Parish Prison on one charge of simple arson.