The Plano Fire Marshal’s Office is investigating the Oct. 21 fire in the 600 block of Legacy Drive as suspected arson, according to a press release.

Plano Fire-Rescue crews responded to reports of a structure fire at an apartment complex around midnight. The first engine arrived within three minutes to find heavy smoke and flames coming through the building’s roof.

Firefighters rescued an adult man from a second-story balcony. He was transported to a hospital in stable condition, treated and later released, the release said.

The fire affected approximately 10 to 12 apartment units. Property management and the American Red Cross assisted displaced residents. No firefighters were injured.

Plano Police took 27-year-old Travon Andrews, identified as a person of interest, into custody at the scene, according to a press release from the City of Plano. Officials have not specified whether Andrews faces charges related to the fire.

The Plano Fire Marshal’s Office is leading the ongoing investigation.