“Then have some good news—my treat. Your officers who disappeared are still in good shape.”
“!”
The chief ’s eyes widened slightly.
“I can still sense the weapons I cooked up,” Dumas continued with a cheerful grin. “I may not be much of a Caster for this Grail War, but I can at least tell if things I’ve been mixed up with still exist or not. Going by my feelings, the weapons I gave them are still somewhere in our world . . . but not somewhere you could walk to. . . . That’s my honest opinion.”
“But the fact that the Noble Phantasms are intact doesn’t guarantee their users’ safety, does it?” The chief asked suspiciously.
“John’s alive, at least,” Dumas answered.

Fate/Strange Fake: Volume 6, Chapter 16 ("The Canon of the Demigods II")