Louisville Metro Arson Capt. Kevin Fletcher told news outlets that the device overheated today morning and began to smoke, which led Southwest Airlines to evacuate the plane before it departed for Baltimore.
Airport authority spokeswoman Natalie Chaudoin said 75 people, including crew members, were evacuated from the flight. She says no one was injured. Fletcher says there was minor damage to the plane's carpet where the device was dropped.
US safety regulators announced a formal recall last month of Samsung's Galaxy Note 7 smartphone after a spate of fires led to injuries and property damage.