His expression slides from shock, concern, then back to the same apprehension. He's impressed at their resourcefulness, considering nothing went more awry. In addition, the Kazekage hasn't seemed to have caught wind of the incident, which Baki considers to be a good thing.

"Are you telling me that at this time we do not know how this occurred? The Yamanaka have not stepped forward?" He'd expect, if anyone, they might have at least an explanation, if not taking responsibility for the event.

"Gaara, have you been feeling any averse effects since the event?" Again, he is not sure how Shukaku would complicate such a state, much less Konoha's tails beast.