The number of reported fraud cases in Tokyo involving scammers posing as police officers dropped 38.8% from a year earlier in the first five months of 2026, Metropolitan Police Department (MPD) sources said Monday.The number of such cases decreased to 548, while the total financial damage from such scams shrank 38.3% to ¥6.17 billion ($38.1 million).A senior MPD official said that anti-fraud measures are beginning to take effect, with downloads of a crime prevention smartphone app promoted by the department doubling during roughly the same period.