The Michigan State Police bomb squad was called Monday to investigate the discovery of an explosive device on the grounds of Oakland Southwest Airport in New Hudson.
The device was spotted by Oakland County Sheriff's Department deputies investigating a report of fuel theft from an airplane.
The device was described as a plastic bottle with cotton sticking out of the top.
Bomb squad team members used a robot to open the bottle. They found it ws filled with fireworks powder. The bottle was removed from the area and was secured in an explosives storage trailer.
Deputies working with a K-9 unit dog did a sweep of the area in search of any other devices. None were found.
The investigation into the source of the device continues.