The Southampton manager told The Daily Echo after his side's 3-2 victory: "One of our members of staff sat on the bench was all of a sudden pelted with numerous objects and had to have a couple of stitches in his forehead.
"It’s not right for me to name names but it was an important member of our staff and I’ve got photographs with blood streaming down his face.
"It was an unsavoury moment. A lot of objects got thrown in the dug out, it was pelted with all sorts."
The same newspaper are reporting that fitness coach Nick Harvey was the person hit in the aftermath of Rickie Lambert's 85th-minute penalty.