The Japanese commander of the Dansalan garrison sent a punitive expedition to Watu, a small village on the western shore of the lake, looking for Manalao Mindalano, the first Maranao leader to launch attacks against them
Source: McKenna, Thomas. “The Battle Of Tamparan And The Forgotten Moro Heroes Of World War II” https://www.positivelyfilipino.com/magazine/the-battle-of-tamparan-and-the-forgotten-moro-heroes-of-world-war-ii. Accessed on Oct 29, 2023.