Craigslist suspect seemed disturbed

BOSTON (AP) - A former medical school lab partner of accused Craigslist killer Philip Markoff says she’s not surprised that he’s a suspect in the case because he had profound mood swings and often appeared “disturbed.”

Tiffany Montgomery tells The Boston Globe that she was often alarmed at Markoff’s mood swings. She says he’d appear warm and friendly one day, then be brooding and depressed the next day. She says she was so troubled that she considered alerting school counselors that he might be suicidal.

Montgomery says even though they spent hours together in the lab while students at Boston University School of Medicine, they never became close.

She says he spoke only when someone else initiated a conversation, and although he seemed nice, he was also “strange in a dark way.”