Breaking: With his site at the center of a murder investigation in Massachusetts, soft-spoken Craigslist founder Craig Newmark sits down for an interview with ABC’s Nightline.

WebNewser has learned Martin Bashir will interview Newmark for Friday night’s show.

We’re told Newmark will respond to questions about criminal activity connected to the site in the wake of the arrest of Philip Markoff, who’s been dubbed the alleged Craigslist killer.