MACARTHUR PARK (CBSLA.com) — Arson investigators Friday were trying to determine the cause of a fire at a Korean church in South LA.

The fire was reported around 1:30 a.m. in the 900 block of Westlake Avenue, the Los Angeles Fire Department said.

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When crews arrived on scene, they found a children’s play area, which was located in between the church and an apartment complex, on fire.

The fire quickly spread to the a front office of the church.

It took crews 19 minutes to knock down the fire.

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The church’s sanctuary was not harmed.

The apartment complex, in addition to four vehicles, also sustained some damage.

No injuries were reported.

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A worship task force, which includes arson investigators, were on the scene.