Murfreesboro police are investigating what caused an explosion at an apartment complex early Wednesday morning.

Officers responded about 4 a.m. to The Vie at Murfreesboro apartments on Wenlon Drive for a reported explosion.

The Vie is a popular student apartment complex for those attending Middle Tennessee State University. No injuries were reported, police said. The Alcohol, Tobacco and Firearms Bureau is investigating.

Kathy Ferrell, executive director of the Heart of Tennessee Chapter of the American Red Cross, said volunteers are on the scene supporting investigators and evacuated residents by providing a pizza lunch.

MPD spokesman Larry Flowers said the explosion may have been caused by an improvised explosive device.

A leasing agent at the Vie said she wasn't allowed to comment on the explosion.

This is a developing story.

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