Accused “Craigslist killer” Philip Markoff was ordered held without bail until a hearing Tuesday. He was arraigned in Suffolk Superior Court Monday morning on murder, robbery and kidnapping charges. Markoff, 23, a Boston University medical student, is charged with robbing and killing masseuse Julissa Brisman, 25.

Accused “Craigslist killer” Philip Markoff was was ordered held without bail until a hearing Tuesday. He was arraigned Monday in Suffolk Superior Court on murder, robbery and kidnapping charges.

Markoff, 23, a Boston University medical student who lived in an apartment in Quincy, is charged with robbing and killing masseuse Julissa Brisman, 25. She was shot to death April 14 at the door of her 20th-floor hotel room in the Marriott Copley Place Hotel.

He is accused of kidnapping and robbing a prostitute at the Westin Copley Hotel on April 10. The 29-year-old Las Vegas woman was bound with plastic cord and robbed of a debit card and $800 cash.

Markoff also has been charged with pulling a gun on a stripper at a Rhode Island hotel on April 16.

Markoff allegedly contacted each of the three women through the “erotic services” section of Craigslist, an online classified site.

A Suffolk County grand jury handed up a seven-count indictment against Markoff on Thursday, according to a statement from Suffolk County District Attorney Daniel F. Conley.

Conley’s statement said Markoff scheduled the meeting with his first victim using a disposable Tracfone – a cellular phone service that doesn’t require the user to provide any identifying information to the cell carrier. Prosecutors believe that shortly after midnight on April 10, Markoff met that woman on the Westin hotel’s 13th floor. He accompanied her to her room, where he immediately produced a handgun, according to Conley’s statement. Wearing gloves, he allegedly ordered her to the ground and bound her wrists behind her back with zip ties – plastic strips used to secure wires and other loose items.

Markoff allegedly spent more than 15 minutes ransacking her hotel room and taking cash and personal items. Before leaving, prosecutors say he removed his gloves, placed duct tape over the woman’s mouth, and cut the phone lines in the room.

Three days later, prosecutors say, Markoff responded to Brisman’s advertisement via e-mail. Using a different Tracfone, he arranged a meeting for 10 p.m. on April 14 in her room on the 20th floor of the Marriott, prosecutors say. Evidence suggests, according to prosecutors, that the two struggled briefly after he entered, at which time he struck her multiple times in the head with the butt of a 9mm semiautomatic handgun.

“The blows to her head were so sharp and so violent that they fractured her skull,” Conley said.

Markoff allegedly proceeded to fire three rounds into Brisman’s chest and abdomen from close range, killing her almost instantly. When she was found lying in the threshold of her room, Brisman had a zip tie on one wrist and bruising on the other. She was rushed to Boston Medical Center, where she was pronounced dead from her injuries.

In the hours and days following Brisman’s homicide, Boston Police detectives and Suffolk prosecutors obtained the Internet protocol address for the e-mail account used to set up the deadly encounter. Using that information, homicide investigators learned the physical address from which the e-mail was sent – allegedly Markoff’s apartment in the HighPoint complex on Quarry Street in West Quincy – and undertook surveillance of it. On April 19, they observed a man meeting the assailant’s description at that address and identified him as Markoff.

Alerted to the investigation and Markoff’s status as a student, members of the Boston University Police Department obtained the defendant’s college identification photograph for use in an array that was later presented to the surviving victim. That woman identified Markoff as her assailant.

Boston Police continued to trail Markoff until they observed him and a female associate leaving his residence with luggage the next day. Believing that he might be preparing to leave the area and having probable cause to search his vehicle, they stopped him as he traveled south on Interstate 95.

Markoff and his associate were transported to Boston Police headquarters for interviews. Meanwhile, investigators executed a search warrant on his home, recovering a 9mm semiautomatic handgun, ammunition, and zip ties consistent with those used in the attacks, police said. Investigators also recovered four pairs of women’s underwear bundled into socks and secreted within his box spring, several Tracfones, and laptop computers, including one with remnants of the email communication arranging his meeting with Brisman, according to authorities.

Conley approved a warrant charging him with Brisman’s murder. Markoff was held without bail at his arraignment in Boston Municipal Court.

Conley noted the investigative contributions not only of Boston Police, State Police, transit police and BU Police, but also those of Boston Police detectives assigned to his Special Investigations Unit; FBI agents; Secret Service agents; agents from to Bureau of Alcohol, Tobacco, Firearms, and Explosives; the Cybercrime Division of the Massachusetts Attorney General’s office; the Rhode Island Attorney General’s office; and the police departments of New York City and Warwick, R.I.

Markoff is represented by attorney John Salsberg. His arraignment was expected this morning in the Magistrate’s Session of Suffolk Superior Court, located on the seventh floor of the courthouse.

Investigators continue to monitor tips phoned in to the Boston Police Homicide Unit and CrimeStoppers Tip Line at 1-800-494-TIPS.

The Patriot Ledger