Raiders' linebacker Ray-Ray Armstrong apparently got into a barking session with a police dog before Sunday's game in Pittsburgh.

Allegheny County Sheriff's Office chief deputy Kevin Kraus met with representatives from the district attorney's office to discuss charges that Armstrong could be facing.

Armstrong allegedly "lifted his shirt, pounded on his chest and began barking'' at the dog before heading on to the field, the San Jose Mercury News reports.

The linebacker offered a "no comment" when asked about the investigation Tuesday, and the Raiders are not expected to comment either, per a team spokesman.