A medical examiner has testified at the trial of a Utah doctor charged with killing his ex-wife that an autopsy showed she had suspicious wounds on her wrist and leg.

Examiner Erik Christensen said Monday that the 2011 death of Uta von Schwedler in Salt Lake City initially looked like a suicide, but the wounds pointed to a homicide.

He ultimately found she died of drowning and stopped short of ruling her death a homicide or suicide.

Christensen says von Schwedler was found in her bathtub with a fatal amount of the anti-anxiety drug Xanax in her system. He says it would be difficult to forcibly inject someone with the drug.

Prosecutors say 51-year-old John Brickman Wall killed his wife during a bitter custody battle. Defense attorneys counter that she could have killed herself.