Although the autopsy report revealed the cause of death was drowning, it did little to clear up the mysterious circumstances surrounding it. Her body showed signs of minor blunt force injuries, with red abrasions on several parts of the body including the forehead, upper back, chest and abdomen, but the report did not draw any conclusions from the injuries.
The autopsy found no evidence to suggest Ma was sexually assaulted prior to her death.
A review of Ma's medical history didn't reveal much either, the report stated, with no documented signs of "suicidal ideations or threats." Medical records showed a history of slightly elevated fasting glucose levels, and she had signs of pancreas inflammation, according to the autopsy report.
A toxicology report shows that Ma did not have any noteworthy drugs or medications in her body when she died, finding only elevated levels of caffeine. The tests screened for a laundry list of substances including ethanol, amphetamines, antidepressants, antipsychotic agents, opioids and sedatives.
The autopsy report listed the manner of death as "undetermined," but noted that Ma's strange behavior prior to the death may have led her to get into the water.
"Her reported confused state is highly suggestive of psychotic behavior and may explain her entry into the water," according to the report.
Sunnyvale police released a brief press release Monday afternoon stating that the department's investigation found no evidence of foul play in Ma's death. The investigation sought to retrace her steps leading up to the discovery of her body on Dec. 7 to determine if anyone was involved in her death, but it did not include trying to figure out why she may have entered the water and drowned, according to Cpt. Shawn Ahearn of the Sunnyvale Department of Public Safety. Determining the manner of death falls under the purview of the autopsy report, he said.
"There is no evidence to indicate foul play," Sunnyvale police said in the press release. "And because intent cannot be unequivocally determined, the medical examiner has ruled the manner of death to be undetermined."
Ma joined Google as a software engineer in July 2016 after attending the University of Texas at Austin, according to her LinkedIn profile. The company put out a statement shortly after her death offering condolences and noting that she was an "excellent" software engineer on the developer product team.
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