The New York City attorney accused in a string of sexual assaults in Charlestown now faces charges that are tied to a spate of rapes and sexual attacks in the North End, according to the Suffolk District Attorney’s Office.

Matthew Nilo, 35, of New Jersey, has been indicted by a Suffolk County grand jury on seven charges connected to alleged rapes and sexual attacks in the North End in 2007 and 2008. The series of Charlestown rapes were also in the same time period.

The new charges stem from five attacks on four women in the North End, according to the Suffolk DA’s Office.

One of the victims was attacked twice, 11 days apart. The attacks occurred in January 2007, July 2007, January 2008, and July 2008.

The incidents followed a similar pattern, prosecutors noted. The victims were attacked while they were walking alone, in the dark, either at night or early in the morning. The attacks happened when Nilo was living in the North End.

The new seven charges are: one count of rape, one count of aggravated rape, three counts of assault with intent to rape, and two counts of indecent assault and battery.

Nilo will be formally charged on the new counts at his next court appearance on July 13. Nilo was released on June 15 after posting $500,000 bail for the alleged Charlestown sexual assaults.

DNA was key to solving the Charlestown rapes, police said when Nilo was arrested, and DNA was also crucial for these new charges.

“We will release more information at arraignment, but I can tell you today that DNA evidence played a role in these new indictments,” Suffolk DA Kevin Hayden said. “I can also tell you that the cooperation and coordination between our office, the Boston Police Department and the FBI has played a major role in our ability to secure today’s indictments and to give the survivors of these crimes the ability to see their attacker held accountable for his actions.”

Hayden added, “Lastly, I can tell you this case demonstrates that no attack will go uninvestigated, no suspect will go unpursued, and no amount of time will insulate a criminal from a crime.”