The phrase "suspicious movement" refers to any motion or action that seems strange or doubtful, causing someone to feel uneasy or concerned about the person or thing involved. Full definition
It can send you a notification whenever there is suspicious movement in your home. (iphonehacks.com)
A Palestinian police officer shot the civilians «after identifying suspicious movements,» the spokesman said, citing information about the incident provided by Palestinian officials. (religion.blogs.cnn.com)
Ayodele said security was the responsibility of all and sundry and therefore asked members of the public to always report suspicious movement and persons to security agents so as to nib crime in the bud and apprehend criminals. (nigeriapoliticsonline.com)