Khôltekh's emissary wants you to find the destroyed delivery caravan and the manifest it was carrying. Once recovered, you are to find the items listed within the Haradrim camp.
'The goods and materials the Haradrim stole from the caravan cannot remain in their possession. I must admit that the news of their robbery came as a surprise, and I was caught without the manifest of goods on the caravan. While you assist me with these efforts, could you find the site of the attack and locate the manifest, if it survived? Once you have done that, I ask that you recover whatever materials might be salvaged from the Haradrim camp.'
The guard's report suggested that the caravan was ambushed by the Haradrim while travelling the south road. Search along the road for signs of the ambushed caravan.
You have discovered the caravan. It was clearly ambushed, the cargo stolen, and all occupants are missing. You should set about finding the manifest.
The manifest lists the items aboard as eight crates of food, an ornate cruet meant as a gift, a sealed document case, and twelve ornate weapons. Perhaps the Haradrim have them within their camp to the east. You should venture there in search of these items.