A Wisconsin man is being accused of impersonating a U.S. Border Patrol agent twice in January after approaching police officers and claiming to be off duty, according to prosecutors.

After a deceased woman's toxicology report showed an abnormality — a chemical compound found in several brands of over-the-counter eye drops — suspicions grow over her caregiver's story.

A New Berlin man is accused of posing as a U.S. Border Patrol agent twice in January -- one in Muskego, once in New Berlin.