A DeKalb County sheriff’s deputy has been arrested for allegedly making false statements in an investigation of a handgun that his son wanted to buy, authorities said.

Lt. Malik Brown, administrative aide to Sheriff Jeffrey L. Mann, surrendered at the DeKalb jail Friday after the Georgia Bureau of Investigation issued a warrant for his arrest, spokeswoman Cynthia Williams said. Brown also has been placed on administrative leave, pending the outcome of the case.

The arrest comes after a federal and state investigation into a May 2014 incident in which Brown, then a sergeant, tried to determine if a gun his son planned to buy was stolen, Williams said.

According to Channel 2 Action News, authorities say Brown lied about running the weapon through the GCIC/NCIC database for personal reasons, which is an administrative violation of GCIC policies. He’s charged with making false statements and violaton of oath of a public officer.

An internal investigation by the sheriff led to disciplinary action, Williams said.

Brown has been released from jail on $10,000 bond.