His question hadn't been answered, but Naruto had given away more in the few sentences spoken. If the one in charge was a doctor, experiments would be a heavy reason. Especially if both he and Naruto were here. Though the possibilities there, Gaara did not want to touch on. With both the Kyuubi and the Shukaku, there would be a fearsome amount of destructive power. Let alone the amount of other people here. If they all held something of use as well, something similar. It would be a military force beyond all reckoning.

He brought his attention back to focus. Waking back up explained the morning's sudden shift. If that was perfectly normal, it would most likely get in the way of anything one tried to accomplish. As well as keeping them here. His mouth twisted into a slight frown, considering. There were a few things he needed clarified. Naruto had mentioned ones who were dead. "...A resurrection technique?" Forbidden, but that had not stopped others before.

But more to the point. "Are there others here as well?" Mentioning 'they' would give hints to that, but he had to make certain. As well as something that had been plaguing him. He glanced over the room as he spoke, voice carefully neutral. "Have you noticed anything different about your chakra?"