Capt. Glenn Thompson confirmed to NFL Media on Thursday that Thomas was taken into custody on Aug. 28.
Earlier in that day, shortly after 6:30 a.m., Thomas was stopped by a deputy for speeding in the 8100 block of South Potomac Street, Thompson said. As part of that process, the deputy checked for any outstanding warrants and saw that Thomas had one for failure to appear in court for a traffic ticket, Thompson said.
The ticket was from Jan. 25. Thomas was booked into jail on $500 bail, Thompson said, and released the same day.