Following the suspected arsenic poisoning of a forensic technician in the Los Angeles County coroner’s office, the only eyewitness to Andrew Breitbart’s death has now vanished.

26-year-old Christopher Lasseter saw Breitbart drop dead “like a sack of potatoes” on March 1, hours before Breitbart was set to release a damning video that showed Barack Obama fraternizing with Weather Underground terrorist Bill Ayers.

Lasseter reported that Breitbart’s skin was a bizarre bright red color when he collapsed, a symptom not associated with heart attacks and one which was not explained in Los Angeles County Chief Coroner Craig Harvey’s autopsy report, which lists the cause of death as heart failure.