snoop around
To investigate, search through, or inquire impertinently into something or some place. Please tell me that the cops won't find any incriminating evidence if they start snooping around your office. Sarah's been snooping around, lately—I think she's starting to suspect me. I started snooping around the senator's campaign records and discovered a vast conspiracy of fraud and embezzlement.
snoop around (something)
to look around in a place, trying to find out something secret or about someone else's affairs. Why are you snooping around my house? I am not snooping around.