INDIANAPOLIS -- Federal authorities said Wednesday that they are reviewing a 15-year-old boy's claim that Indianapolis police beat him so badly that one of his eyes swelled shut.

An FBI spokesman said that the agency, the U.S. attorney's office and the Justice Department are reviewing the facts to determine if an investigation is warranted.

Members of the Greater Indianapolis NAACP and the Concerned Clergy of Indianapolis rallied on Tuesday in support of a federal investigation into Brandon Johnson's May 16 arrest on a disorderly conduct charge. Prosecutors haven't formally charged him.

Police said the biracial teen tried to stir up a crowd into a "riotous situation" when officers arrested his younger brother on a burglary charge.

Johnson's family said police beat the boy, bloodying his face, breaking his nose and chipping his teeth.

"We are going to make sure our community knows that we're here to support them. We're not going to take the racial slurs and any of that kind of force from the police," said local NAACP President Chrystal Ratcliffe on Tuesday.

The four arresting officers, all of whom are white, have been placed on administrative duty pending an internal investigation.

Public Safety Director Frank Straub released a statement on Tuesday reiterating that the Police Department's Professional Standards Division is conducting an "objective and thorough internal investigation."

"I am confident that the quality and integrity of IMPD's internal investigation will be consistent with, if not exceed, the standards of the police profession," the statement read. "If the United States Department of Justice wishes to review our investigation, we will make it available to them upon completion."

Indianapolis public safety officials are expected to speak on Thursday to explain the Police Department's use of force, as well as arrest procedures and techniques.