Alma 57:4

But the people of Antiparah did leave the city, and fled to their other cities which they had possession of, to fortify them; and thus the city of Antiparah fell into our hands.

But the people of Antiparah left the city. They ran away to their other cities to make them stronger. So the city of Antiparah came into our hands.

But before we could move, the people of Antiparah abandoned the city and fled to their other strongholds. Just like that, Antiparah fell into our hands.