Mexico’s medical regulatory agency has closed the operating rooms of a Baja California hospital where a young Australian woman died after a cosmetic procedure on her buttocks.

The agency said the doctor who performed the procedure on 29-year-old Evita Sarmonikas is under investigation for possible medical negligence.

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It identified him as Victor Manuel Ramirez Hernandez.

The Del Valle Surgical Hospital in Mexicali Baja California was partly closed and will face fines after it was found to have expired medications, equipment that had not been maintained and other failings.

The commission said Ms Sarmonikas died March 20 after undergoing procedures on her buttocks and abdomen.

Her family had said the Ms Sarmonikas who grew up on the Gold Coast, died from a heart attack after the surgery.

Mexican authorities have suspended 80 plastic surgery and aesthetic clinics or offices for violations since late 2012.