Federal prosecutors will seek the death penalty against the man they say led a violent New Jersey street gang charged in 2013 with six murders.

Prosecutors on Monday filed the formal notice of their intent to seek the death penalty against 30-year-old Farad Roland. They say it's only the second death penalty case to be tried in federal court in New Jersey.

U.S. Attorney Paul Fishman says U.S. Attorney General Eric Holder authorized seeking the death penalty against Roland last month. They say Roland led the South Side Cartel in Newark, a subset of the Bloods street gang.

Roland and two co-defendants have pleaded not guilty to murder, kidnapping, robbery, carjacking and drug conspiracy charges. His co-defendants will not face the death penalty.

Roland's lawyers weren't immediately available for comment.