The headline says "Detroit man" but the article goes on to provide zero indication that the thief is a man or from Detroit.
For whatever reason, everyone within 25 miles of Detroit "lives in Detroit" even though a whole lot of us might visit the city less than once a year.
The media will usually say "Metro Detroit" when referring to someone who doesn't actually live in the city[0] of Detroit and given the location of the gas station, it's probably an actual person who lives in the city.
[0] In which case it could be someone living in one of three different counties.
Also, I just call it south east Michigan. Detroit is subordinate to Oakland County now. Maybe we should call it Oakland-Macomb for better accuracy.