Decides that all States shall detain pending investigation all vessels, freight vehicles, rolling stock, aircraft and cargoes found in their territories and suspected of having violated or being in violation of resolutions 713 (1991), 757 (1992), 787 (1992) or the present resolution, and that, upon a determination that they have been in violation, such vessels, freight vehicles, rolling stock and aircraft shall be impounded and, where appropriate, they and their cargoes may be forfeit to the detaining State;