The Wisconsin Supreme Court on Wednesday suspended serial killer Jeffrey Dahmer's attorney for two months over a series of ethics violations tied largely to an attempt to help a client recover money spent on fake John Lennon memorabilia.

The justices also ordered Gerald Boyle to take courses in law office management and to pay $24,900 to cover the costs of the disciplinary proceedings against him.

Boyle rose to prominence in southeastern Wisconsin law circles after he defended Dahmer. The serial killer was sentenced to life in prison after confessing to 17 murders. Another inmate killed Dahmer in 1994. Boyle also gained fame for defending former Green Bay Packers star Mark Chmura against sexual assault charges. Chmura was ultimately acquitted in 2001.

Boyle didn't immediately return a voicemail left Wednesday at his Milwaukee office.

According to court documents, the state Office of Lawyer Regulation brought six misconduct counts against Boyle last year. Five counts were connected to a man who paid out-of-state galleries tens of thousands of dollars for a microphone Lennon had used and sketches the Beatles front man had drawn.

The man, identified only as D.P. in the documents, hired Boyle to represent him in efforts to recover his money after he learned the memorabilia was fake.

Boyle improperly deposited $65,000 in advance fees from D.P. in his office's operational account rather than in a client trust fund, according to court documents. The attorney also failed to prepare written fee agreements or explain in writing the basis for the fees.