1. A movement, action, or gesture that appears questionable, unusual, or potentially harmful and warrants investigation or caution
The security guard noticed suspicious movement in the warehouse at night.
O segurança notou um movimento suspeito no armazém à noite.
2. In law enforcement or security contexts, any behavior that deviates from normal patterns and could indicate criminal intent or danger
Police were called to investigate suspicious movement near the bank.
A polícia foi chamada para investigar movimento suspeito perto do banco.