This happened

“The most repellant aspect of the Japanese defence of Manila was their systematic slaughter of the city’s civilians. The Japanese justified this policy by asserting that everyone found in the battle area was a guerrilla. Over a hundred men, women and children were herded into Paco Lumber Yard along Moriones and Juan Luna Avenue, where they were bound, bayoneted and shot. Some bodies were burned, others left rotting in the sun. Japanese squads burst into buildings packed with refugees, shooting and stabbing. There were massacres in schools, hospitals and convents.” – Max Hastings, “Retribution”