Prof to 911: Student Who Died Did Coke

The investigation got off to a difficult start in part because Ziegler arrived at the morgue from the hospital as a "Jane Doe," or unidentified female. Todd did nothing to confirm her identity for rescue personnel or doctors.

Andria Ziegler, a 19-year-old pshychology student at Paradise Valley Community College, died at a...

Andria Ziegler, a 19-year-old pshychology student at Paradise Valley Community College, died at a hospital after paramedics responded to a 911 call placed by Michael Todd at 2:34 a.m. Sunday, April 20. The 51-year-old academic, who since has lost his professorship, had taught Ziegler for the two semesters preceding her death.

(Handout Photo)

Ziegler's family, concerned when she did not return from a night out Saturday, began searching for her that Sunday and ultimately filed a missing person's report around noon Monday.

Authorities matched Ziegler's description provided by the family with the unidentified woman who had arrived at the morgue the previous day.

"Am I angry? Of course I'm angry," Dick McManus, Ziegler's stepfather, told ABC News today about the release of the 911 calls.

"He has no emotion in his voice," McManus said. "He's sounds like it's been made up or it's well thought out. He says Andy's been doing coke. What was he doing? Oh, he was busy watching her do coke and then he goes to bed?"

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After Ziegler went missing, he tried to reach out to Todd by phone and e-mail and ultimately drove over to his condominium, where he found his stepdaughter's car.

McManus said at the time of Ziegler's death that his family, which includes seven brothers and sisters, believed that Todd had been trying to win a date with his stepdaughter for weeks.

Since her death, Ziegler's family learned that she had been at Todd's house the Wednesday before her death, McManus said.

Reports have surfaced about potentially inappropriate relationships between Todd and his female students. In 2002, Paradise Valley Community College required that he take an online sexual harassment course after a report about his behavior. On May 8, the chancellor of Maricopa Community Colleges, a group that includes Paradise Valley belongs, recommended his termination for violating the school district's "amorous relationships" regulation.