NEWARK -- Two men were indicted in the slaying of a 23-year-old New Jersey Institute of Technology student, who was shot to death during a burglary at his Newark fraternity house, Essex County prosecutors said Wednesday.

Nafee Cotman, 19, of Irvington, and Taquan Harris, 22, of Newark, are charged with murder, felony murder, robbery, burglary and weapons offenses in the May 2 killing of Joseph Micalizzi, of Freehold, at the Tau Kappa Epsilon house on Dr. Martin Luther King, Jr. Boulevard near the NJIT campus.

Micalizzi was shot in the hand and head during an early-morning struggle with the assailants in his room at the fraternity house, according to law enforcement sources. He later died at University Hospital in Newark.

Investigators arrested Cotman and Harris three days after the killing, authorities said. Both men have pleaded not guilty and remained held at the Essex County jail ahead of an Oct. 17 arraignment.

Cotman and Harris did not know Micalizzi and were apparently searching for money before the attack, acting Essex County Prosecutor Carolyn A. Murray said previously.

Micalizzi transferred from Brookdale Community College in Monmouth County to NJIT, where he studied mechanical engineering and earned a spot on the Dean's List. Micalizzi was remembered as humble, respectful and focused. Hundreds attended a campus vigil held for Micalizzi.

"This is a loss of a promising young man, who by every indication, was poised to make a great contribution to the state of New Jersey," Murray, previously said.

The slaying came less than a month after a Rutgers-Newark student was shot and killed at his off-campus home near the university in what law enforcement sources have described as a drug-related shooting.

Campus police and city officials worked to reassure students and parents that the area was safe, and boosted police patrols around both schools.

Editor's Note: Authorities initially provided an incorrect home town for Joseph Micalizzi. He was from Freehold.

Noah Cohen may be reached at ncohen@njadvancemedia.com. Follow him on Twitter @noahyc. Find NJ.com on Facebook.