According to wwltv.com, Bobby McCray was arrested for DUI:

Saints defensive end Bobby McCray was arrested for driving under the influence in New Orleans around 4:30 a.m. Tuesday, according to Gary Flot, a spokesman for the NOPD.

The Saints only comment on the situation came from the teams spokesperson, Greg Bensel:

"We are aware of the situation involving Bobby McCray and we will let the legal process take its course,"    

Not much info in the article, we'll probably get more later. Negative publicity is definitely not something the Saints need at this time. Hopefully this won't keep him from playing in the playoffs but it could spell the end for McCray if the team decides to treat him like they did practice squad players Biren Ealy and Kolomona Kapanui, who were immediately released after being arrested for urinating in public back in May.