CHICAGO (CBS) -- The new Chicago interim police superintendent is under investigation for allegedly helping his fiancée and others pass the test to become a lieutenant.

But now some are saying those complaints amount to nothing more than sour grapes, reports CBS 2's Dorothy Tucker.

Pat Hill, retired police officer, former executive for the African American Police League offers a blunt assessment about allegations Lt. Nakia Fenner cheated on the most recent lieutenant's exam.

"I call this much ado about nothing," she says.

According to DNAinfo.com, an internal police investigation is focused on Fenner who just happens to the fiancée of Interim Police Superintendent Eddie Johnson.

Hill says racism is an underlying motive.

"Historically you have not had this many black people score this high on the test for lieutenant consistently," she says.

An anonymous whistleblower accuses Fenner of getting high scores because she was part of a study group lead by Deputy Chief Eugene Williams, who allegedly helped create the exam. AT the time, Williams was also the president of a group representing black police executives called NOBLE, which formed the study group.

"It's not unusual for a organizations within the Chicago Police Department, fraternal organizations such as NOBLE, the Lieutenant's Association, the Sergeant's Association, the Latin American Police Association, to have study groups," Hill says.

In fact, in a 2014 lieutenant's promotional report, there are sample test questions, "Which of the following would be the most appropriate charge?" or "How would you handle this situation as the field lieutenant?" and it suggests officers join a study group and ask members of the department to answer any question.

"The African American Police League used to conduct study groups for entry level to teach people how to take standardized police exams," Hill says. "It's not unusual."

According to published reports, two other female lieutenant's connected high ranking police officers are also part of the anonymous complaint.

Those female officers are also African American.

A spokeswoman mayor's office has issued a statement in response saying, "There are unsubstantiated questions that have been raised about the most recent lieutenants' test and those questions are being looked into, as they should be. Interim Supt. Johnson made it clear from his first day that building trust is his top priority and he already said he will take action should any wrongdoing be found."