Fire investigators are trying to uncover what caused a fire at the Lil People Day Care and Learning Center on North Sherwood Forest Boulevard early Wednesday morning, a Baton Rouge Fire Department spokesman said.

Firefighters arrived at the business at 4157 N. Sherwood Forest at 3:17 a.m. and found an upstairs closet on fire, spokesman Curt Monte said.

The fire spread to a neighboring bathroom before firefighters extinguished the flames, Monte said.

No one was in the building at the time of the fire, Monte said.

Entergy disconnected power to the building as a precaution, Monte said.

The rest of the building sustained minimal damage, Monte said.

Calls to the daycare Wednesday morning went unanswered.