Timeline in University of Michigan child porn case

May 23, 2011 — A resident physician is working at night in a locked lounge that residents use in the Pediatric Emergency Department at University of Michigan Hospital. As she's dictating patient charts, she notices a thumb drive was left in the computer she's using. As she opens files on it, seeking to identify its owner, she finds a written document with the name "Stephen Jenson" on it, an affidavit says, recognizing Jenson as another resident physician.

She also finds two image files. One shows an "adult female nude and standing," while the other shows a "caucasian child lying on a bed face up," an affidavit says. A nude adult is lying on the child whose arms are bound to the bed frame, an affidavit says. The resident who views the image believes the child is "definitely pre-pubescent", estimating the child's age between 5 and 10 years old. The resident panics, leaves the thumb drive in the computer and goes home.

May 24, 2011 — The resident who viewed the image returns to work in the morning, planning to retrieve the thumb drive and file a report, an affidavit says. However, the thumb drive is gone.

May (dates unknown) — The resident physician speaks with her supervisors and meets with hospital security officials and then the Office of the General Counsel, revealing what she's seen. She shows hospital security officers the computer she was using. She's told "a few days after making the report that the matter was closed," an affidavit says.

Nov. 18, 2011 - A hospital security official makes a phone call to University of Michigan police Lt. Melissa Overton to report the crime, providing a brief overview of what happened. Overton says she will send an investigator. The security official tells her that those who need to be interviewed have left for the weekend.

Nov. 21, 2011 — Detective Pillsbury is assigned to investigate and immediately starts conducting interviews. She meets with Corbie Wells, who is a supervisor of security services at the hospital, and Latreece Taylor, who is a security investigator there. Wells explains that he and security officer Brian Eichert met with the resident physician in May, when she reported that she saw a pornographic image of a child on a thumb drive left in a computer. She also reported that she found a word document on the drive with a resident physician's name on it.

Wells and Taylor tell Pillsbury that in May they asked Medical Center Information Technology data security analyst Jim Simonis to review the logs for the computer that was used to view the images "to determine if there was information to support the allegation," an affidavit says. Taylor gives Pillsbury a written report identifying Jenson as a suspect, but it's unclear when the report was completed.

After speaking with Wells and Taylor, Pillsbury asks Simonis for data related to the examination in May 2011 of the computer that was used to view the images. The logs pulled in May 2011 show that Jenson logged onto the computer on the night of May 23, an affidavit says. The resident physician who viewed the images logged onto the computer less than two hours after Jenson logged off, an affidavit says. The next morning, an affidavit says, Jenson logged onto the computer for seven minutes. An affidavit says no one logged onto computer between the time the resident who viewed the images logged off and when Jenson logged on the next morning. Pillsbury also interviewed the resident physician sometime between Nov. 21 and Nov. 23.

Nov. 23, 2011 — University police conduct a forensic examination of the computer that was used to view the images.

Dec. 1, 2011 — University police obtain a search warrant for Jenson’s home.

Dec. 2, 2011 — Police execute a search warrant at Jenson’s home in Pittsfield Township, seizing numerous items, including three thumb drives. Investigators obtain another search warrant to examine what they seized. On one thumb drive, an affidavit says, investigators find images of child porn.

Dec. 16, 2011 Jenson is fired from his position at University of Michigan Hospital.

Dec . 17, 2011 — Jenson is arraigned at the Washtenaw County Jail on four counts of possessing child sexually abusive material. University police file court papers, asking for a $25,000 cash bond. In the filings, police note that they consider Jenson a flight risk and danger to the public. Magistrate Mark Nelson releases Jenson on a promise to appear in court with strict bond conditions. Under the conditions, Jenson is prohibited from contacting children and must wear a GPS tether. He had to surrender his passport.

Jan. 30, 2012 — The day after news breaks that the university officials waited six months before reporting the child porn to police, U-M Health System CEO Ora Pescovitz writes on her blog, calling it a, “painful moment in our history.”