Why didn’t Mulder and Scully ever investigate a case like this?

“The people of Lardal aren’t easily scared,” Sheriff Lars Helge Sogn told reporters in Oslo, “so when we had over thirty calls from citizens, all saying that they’d spotted a UFO and suspected meteorite, I took the matter seriously. Dozens of observers said that they’d heard an explosion, then spotted a fireball in the night sky, which burned for half an hour. So I contacted the astrophysics department at Oslo University, and asked them to investigate.