The investigation into Michael Jackson’s tragic death on June 25, 2009 has been finally completed.

Prosecutors in Los Angeles will seek an involuntary manslaughter indictment against the doctor suspected of giving Michael Jackson a lethal dose of a sedative, The Associated Press reported Friday.

A law enforcement source told The AP that Houston physican, Dr. Conrad Murray, will be prosecuted on a theory of gross negligence.

Dr. Murray, who had been hired to help the King of Pop prepare for a marathon London concert series, was at the 50-year-old singer’s rented mansion when paramedics arrived on June 25, finding him unconscious.