Pre-1441:

Dr. Blix has our full confidence," Reeker said at a State Department regular briefing April 15. "He stressed that his mandate is to conduct a thorough, no-holds-barred inspection of Iraq's compliance with its obligations under U.N. Security Council Resolution 687."

From 1441, itself:

5. Decides that Iraq shall provide UNMOVIC and the IAEA immediate, unimpeded, unconditional, and unrestricted access to any and all, including underground, areas, facilities, buildings, equipment, records, and means of transport which they wish to inspect, as well as immediate, unimpeded, unrestricted, and private access to all officials and other persons whom UNMOVIC or the IAEA wish to interview in the mode or location of UNMOVIC’s or the IAEA’s choice pursuant to any aspect of their mandates; further decides that UNMOVIC and the IAEA may at their discretion conduct interviews inside or outside of Iraq, may facilitate the travel of those interviewed and family members outside of Iraq, and that, at the sole discretion of UNMOVIC and the IAEA, such interviews may occur without the presence of observers from the Iraqi Government; and instructs UNMOVIC and requests the IAEA to resume inspections no later than 45 days following adoption of this resolution and to update the Council 60 days thereafter;

and

In the statement at the end of the meeting, it was clarified that UNMOVIC and the IAEA will be granted immediate, unconditional and unrestricted access to sites, including what was termed “sensitive sites” in the past. As we noted, however, eight presidential sites have been the subject of special procedures under a Memorandum of Understanding of 1998. Should these sites be subject, as all other sites, to immediate, unconditional and unrestricted access, UNMOVIC and the IAEA would conduct inspections there with the same professionalism.

Sounds like an inspection mandate to me. Blix is not a prosecutor.