On the burnt lighter, Lu Chuan has already extracted fingerprints.
Although the fingerprints are not complete, only one-tenth the size of normal fingerprints, they are sufficient for Lu Chuan.
In addition, Lu Chuan discovered some footprints beneath many debris, which, although not particularly complete, provided some basis for judging the perpetrator's conditions.
The footprints of the supermarket owner renting the warehouse have already been collected by someone under Lu Chuan's direction.
Based on the current information, the supermarket individual renting the warehouse usually goes alone or takes his wife to collect items.
Therefore, Lu Chuan needs to exclude the footprints belonging to the supermarket owner among the discovered fingerprints and footprints.
Of course, this is just one aspect because it's not guaranteed that the case is unrelated to the supermarket owner renting the warehouse.
