NEW HAVEN, Conn. AP – Defending a Yale University lab technician charged with murder against what appears to be a mountain of forensic evidence might mean trying to convince jurors that the crime scene was contaminated because police didn’t immediately shut down the lab where the victim was found, legal experts said.

Raymond Clark III is charged with murder for the death of Yale graduate student Annie Le. Le vanished from a research building in Yale’s medical school complex on Sept. 8; her body was found hidden in a wall recess five days later, on what was to be her wedding day.