| Item | Count | Percent |
| Total | 18 | 100.0 |
| Suspect to be prosecuted by other authorities | 6 | 33.3 |
| Weak or insufficient admissible evidence | 4 | 22.2 |
| Agency request | 1 | 5.6 |
| No federal offense evident | 1 | 5.6 |
| Suspect being prosecuted on other charges (e.g., UFAPs) | 1 | 5.6 |
| All other | 5 | 27.8 |