LOS ANGELES, USA — Michael Jackson’s father filed a wrongful death lawsuit Friday against the doctor charged with giving the pop superstar a lethal dose of sedatives one year ago, accusing the Nevada doctor of negligence, secrecy and poor training.

Joe Jackson sued Dr Conrad Murray on Friday — the anniversary of Michael Jackson’s death — in federal court in Los Angeles.

The complaint, which seeks more than $75,000, accuses Murray of professional negligence for providing the singer with a mix of sedatives — including the anaesthetic propofol — that authorities say killed him.

Propofol is normally administered only in hospital settings, but Murray had been providing Jackson the drug in the bedroom of the singer’s rented mansion in Los Angeles. Joe Jackson contends the physician tried to conceal his administration of the drug after Jackson’s death.

The lawsuit also names medical clinics that Murray operates in Las Vegas and Houston, claiming they did not properly train or supervise the doctor. The lawsuit was filed in federal court because Murray’s clinics are in other states and the doctor lives in Nevada.

Murray has pleaded not guilty to an involuntary manslaughter charge filed in February. His attorneys have said that he did not give Jackson anything that “should have” killed him.

His civil attorney, Charles Peckham, repeated that assertion Friday.

“We’d like to remind people that Dr Murray has not been found guilty of anything and we believe his innocence will be proven in a court of law,” Peckham said in a statement. “We’ve been told we were going to be sued for months so today’s filing is no surprise to us.”

Joe Jackson’s attorney, Brian Oxman said there’s a one-year deadline after a death to sue doctors in the state of California.

“It’s an important thing for Joseph Jackson,” Oxman said of the lawsuit after he personally filed it. “He wants justice for his son Michael.”

Also Friday, a court official in Nevada approved what a prosecutor called a reprieve of efforts to revoke Murray’s medical licence in that state.

Prosecutor Gerard Costantian said Murray’s attorneys paid about $5,000 towards Murray’s $15,000 back child support obligation, and the rest will be paid in coming months. Murray lawyer Kristine Brewer said later the money came from an anonymous benefactor whose name she didn’t know.

Murray owes the money to the mother of his 12-year-old son in California. He didn’t have to appear in court Friday. Nevada law allows for the suspension of professional licences for non-payment of child support.

The lawsuit came on a day when fans around the world were mourning Jackson. Joe Jackson was not seen at two of the marquee locations — the unveiling of a statue in the family’s hometown of Gary, Indiana, and the Glendale, California, cemetery where his son is interred.

Joe Jackson’s lawsuit claims Murray repeatedly lied to paramedics and doctors about giving Jackson propofol. Using hospital records obtained earlier this year, the lawsuit claims Murray told an emergency room doctor that he had only provided Jackson two medications, Valium and Flomax.