The Alolan Sandshrew points to a small hole on the ground and Liam saw something sparkle down there. Liam sat his bag down on the ground reached down there and pulled out a pair of Ice Stones. The Alolan Sandshrew tried to indicate that the stone would trigger its evolution. "Neat" Liam commented. Liam noticed. Liam then saw the Sandshrew poking around in his bag, and one of the empty Luxury Balls came out and the Sandshrew accidentally activated it and got caught. Since Liam already had a full team with him, the ball stayed in its small form and the button had a constant red glow.
"I guess I caught an Alolan Sandshrew," Liam said to himself, dropping the Ice Stones into his bag and collecting his stuff. "We should probably get on out of here now."