Texas' law enforcement chief called Snoop Dogg a "dope-smoking cop hater" before reprimanding a state trooper who posed for a picture with the rapper, it has emerged.
Snoop Dogg posted a photo to Instagram with Department of Public Safety trooper Billy Spears in March, with the comment "Me n my deputy dogg". It was taken during the South by Southwest music festival, where Mr Spears was working off-duty as extra security.
The officer is now suing the DPS after being disciplined for taking a picture with a public figure who has several convictions for drug possession.
Emails obtained by Mr Spears' lawyer through open records laws show that the incident went all the way to DPS director Steve McCraw, who is best known for overseeing the state's expansive border security operations.
"Apparently he would rather work the convention while on a week's vacation to earn additional money rather than take an additional tour on the border," Mr McCraw wrote.
"He must not understand that he was being lampooned by a dope-smoking cop hater which reflects very poorly on the department."
DPS spokesman Tom Vinger confirmed the email was authentic but did not comment on its content. He referred to the agency previously saying that DPS holds employees to high standards of conduct and judgment.
The emails include a DPS supervisor explaining that Mr Spears and other troopers had routinely taken pictures with other celebrities at SXSW. He mentions actor Robert Duvall, former basketball star Shaquille O'Neal and musicians Cee Lo Green and Rob Zombie.
Mr Spears, who is seeking unspecified damages, claims he was disciplined in retaliation for filing a complaint against a superior several weeks earlier .