SHERMAN OAKS (CBSLA) — What was initially believed to be gunshots going off at a Sherman Oaks apartment complex that drew a major police response early Monday turned out to be fireworks.

Residents of The Plaza, 4500 Woodman Ave., called 911 to report gunshots just after 2 a.m. Monday. When officers arrived, they heard what sounded like more gunshots.

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After several police cruisers and an airship responded to the scene, officers with their guns drawn moved in, while residents sheltered in place.

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At the apartment where the noise had originated found, there was no evidence of a shooting, nor shell casings – instead, officers found burn marks and other indications of fireworks that had been set off in a glass. They also did not find anyone at the scene.

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No injuries were reported.