Lawrence Police arrested an employee of Last Call, 729 N.H., early Sunday on suspicion of battering a club patron.
The alleged victim, a Wichita man, told police a security guard confronted him about setting a beer bottle near the dance floor and then asked him to leave.
The man said other security guards grabbed him and that he was thrown to the ground outside the club, causing minor injuries.
A bar employee, identified as Christopher D. Fulton, 21, Lawrence, was arrested for battery and ordered to appear Friday in Municipal Court.
Police said his version of events was that the patron tried to walk into the club after he was asked to leave and "moved toward him in an aggressive manner."