This photo has been causing a lot of controversy among members of Pittsburgh's law enforcement.
The woman posing with the police officer is porn star Andy San Dimas.
According to Pittsburgh's WPXI, the police department is attempting to identify the police officer in the unicorn mask.
City public safety director Michael Huss said the officer may be disciplined because the picture "is not the example we're looking for."
Acting Pittsburgh Police Chief Regina McDonald said in a statement, "We are aware of the photos on the Internet (Facebook) and are currently investigating the incident. At this time we have not identified the individual or the circumstances