Fire investigators have determined that "careless smoking" caused Monday's fire at Tyler Perry Studios in southwest Atlanta.

The fire was the second blaze in recent months at the studios on Continental Colony Parkway.

Atlanta Fire Department spokeswoman Marian McDaniel said the latest blaze was confined to a roof of a building at the complex. The building was undergoing repairs to the roof when the fire broke out, McDaniel said.

The building did not sustain any structural damage and no injuries were reported, McDaniel said. It was brought under control in less than an hour. No criminal charges are pending at this time.

The fire was apparently in a three-story, 100-by-200-foot building. Video from the Channel 2 Action News helicopter showed about two dozen firefighters on the roof of the building.

In early May, the exterior of a building in the 30-acre complex was heavily damaged by fire. The interior of that building sustained some water damage.

It was not immediately known whether the building on fire Monday was the same building that caught fire on May 1.

The 200,000-square-foot studio, which opened in 2008, is home to sets, sound stages and a 400-seat theater. In March, Perry hosted a fundraiser for President Barack Obama at the studio.

—Dispatch editor Angel K. Brooks contributed to this article.