A man is in custody after Illinois police say he was caught on homeowners' cameras impersonating a police officer.
Two other suspects were also taken into custody Thursday and Wheaton police say they are looking for a fourth person who may be involved.
The impersonator, described as being in his 20s, had a fake badge and a police scanner or scanner app on his phone when he approached homes in the Chicago area on Monday and Tuesday, authorities said.
"Hi, sorry to bother you so late," the man says in one homeowner video obtained by Chicago ABC affiliate WLS. The man introduced himself as an investigator with the Winfield Police Department.
(MORE: Fake cop pulls over real cop in New Jersey)The suspect asked residents "various police-related questions" but didn't make threats or try to go into the homes, said police in Wheaton, about 30 miles west of Chicago.
"Here are an actual Wheaton Police Detective shield & Wheaton Police star for reference," the police department said via Twitter. "Wheaton Police Officers/Detectives will always identify themselves by uniform or credentials."
Wheaton police did not immediately announce charges.