Breeland, a fourth-round pick, was issued a summons at 10:40 p.m. ET for simple possession of marijuana, according to a statement by the Virginia Commonwealth University police.
The incident, considered a misdemeanor, occurred on the VCU campus. Washington broke camp Tuesday morning.
A Redskins spokesman said the team was aware of the incident and declined further comment.
Breeland impressed the coaches during camp with his steady improvement. Although he was not working with the first defense or even first nickel package, they envisioned a growing role for him throughout the season.
Hours before Breeland was cited by police, coach Jay Gruden said he was pleased with his players' professionalism this summer.
"We've had no disciplinary things we've had to go through," Gruden said. "It's been really a pleasant surprise with how professional they've all been and how they're coming in here."