Sheriff’s deputies on Tuesday arrested a former Charleston County employee who they say violated his access to state Department of Motor Vehicles records to contact a driver he had argued with.

Deputies charged Ernest Theodore Cammer, 69, of John Rutledge Avenue in Hanahan with use of confidential information by a public employee, sheriff’s Capt. Mike Stanley said.

Cammer, who worked for the Charleston County Auditors’ Office, said he was a few days away from retirement when he discovered he would be charged in the incident.

Cammer said his arrest stemmed from his being on the receiving end of another driver’s road rage Oct. 3 while driving on Ashley Avenue.

“This other guy thought I made an improper turn, and he started shaking his fist at me,” Cammer said.

Cammer rolled down his window to hear what the other man had to say. The man pointed to his tags in anger, and he claimed to be off-duty law enforcement, Cammer said. “He said ‘I’m off duty now, but you wait until tomorrow,’ ” Cammer said.

Feeling threatened, Cammer said, he recorded the tag number on the other driver’s 2012 Lexus. He used his access to DMV records to identify the man, according to deputies.

“I mailed him a letter, just to let him know that he was wrong, and was done with it,” Cammer said. “It was all in the heat of the moment.”

The other driver was Shawn Livingston, a former Mount Pleasant police lieutenant who now heads the criminal justice studies department at Trident Technical College, according to a police report. Livingston, a 44-year-old Charleston resident, reported the incident to the Charleston County Sheriff’s Office after receiving the letter from Cammer, the report states.

Livingston did not return a call and email sent to his office Wednesday.

Cammer said he thought the situation was over, until he learned in December that charges would be brought against him.

He was arrested Tuesday and held at the Charleston County jail. He has since been released on $10,000 bail, according to court records.

Cammer said he was upset and disappointed by his arrest because he had never been in trouble with the law before.

Glenn Smith contributed to this report. Reach Christina Elmore at 937-5908 or at Twitter.com/celmorePC.