Nevertheless, evidence piled higher against Markoff as he sat in an isolated cell in a Boston jail. Markoff is being held in the jail's psyche ward after two suicide attempts, sources have told ABC News. He isn't scheduled to appear in court until May 21.
In the meantime, the only thing Markoff, a second year medical student who was engaged to be married, appears to have said to family members was to forget him. Fiancee Megan McAllister has told Markoff their August wedding is off, and she has moved her belongings out of the Boston apartment the couple shared.
Investigators found a pistol under the couple's bed along with women's panties that police believe were taken from robbery victims. One of the alleged Craigslist victims, Trisha Leffler, said that after she was robbed, her assailant snatched a pair of her panties that were lying on the floor. A law enforcement source told ABC News that police found 16 pairs of women's panties in the apartment, fueling concern that there might be other victims who have not yet come forward.
The gun was hidden in a hollowed medical textbook, "Gray's Anatomy," sources said.
Also found in the couple's apartment were plastic handcuffs identical to the ones allegedly used in the Craigslist robberies.