Westin Copley Place hotel , police reports said . Read the AC360 blog post Investigators knew they had crimes born of the Internet on their hands , but how were they able to use that same technology to help them find a suspect who went to great lengths to hide his tracks ? `` The figures involved communicated with each other -LSB- via -RSB- text and e-mail , and they only met at the very last minute , '' said special correspondent Maureen Orth , who investigated the story for Vanity Fair magazine . `` And then the way the police were able to solve the crime was going back , using the clicks and the Internet addresses . '' In Brisman 's case , police knew she had communicated on Craigslist with a person calling himself `` Andy . '' Mark Rasch once headed the computer crimes unit at the U.S. Department of Justice . Now an Internet forensic expert , he helped Boston police track the alleged killer . `` The first thing you start with was the e-mail address . In this case , it 's an e-mail address from Live.com , which is Microsoft , ''
BOSTON , Massachusetts -LRB- CNN -RRB- -- They were crimes born of the Internet age -- romantic solicitations on popular Web site Craigslist that police say led to the fatal shooting of one woman and the robbery of another in Boston hotels this past spring . Internet forensic expert Mark Rasch used high-tech sleuthing to help police in Boston 's Craigslist crimes . And it was high-tech , 21st-century sleuthing , along with some old-fashioned gumshoe detective work , that put police on the trail toward a suspect and eventually an arrest . On CNN 's `` AC 360 '' Randi Kaye recently took a behind-the-scenes look at how technology was used to lead police to 23-year-old medical student Philip Markoff , who has been indicted on seven counts , including first-degree murder . Prosecutors said Julissa Brisman , a model from New York who advertised as a masseuse on Craigslist , was shot three times at close range and suffered blunt head trauma at the Marriott Copley Place hotel on April 14 . And a 29-year-old Las Vegas , Nevada , woman was robbed of $ 800 in cash and $ 250 in American Express gift cards at the