Aaron Hernandez and his lawyer, Charles Rankin, confer during a Feb. 7 hearing in Fall River, Mass.(AP Photo/The Boston Globe, Jonathan Wiggs, Pool)

Aaron Hernandez, the former New England Patriots tight end who is in a Massachusetts jail awaiting trial on murder and weapons charges, got into a fight with another inmate Tuesday.

Hernandez, who was arrested June 26, was involved in an altercation with another inmate at the Bristol County House of Correction and Jail in North Dartmouth, Sheriff Thomas M. Hodgson told the Boston Herald. Neither man, he said, was injured.

Hernandez, 24, and a few other inmates are being held in a special unit away from the general population. “In special management we only allow one person out at a time,” Hodgson said. “That will be part of our investigation.”

The incident could result in criminal charges, Hodgson said. “The investigation is ongoing, there’s not much we can say other than that we are pursuing it,” Hodgson said. “We are looking at tapes and doing interviews of anyone who may have been there.”

Hernandez has pleaded not guilty to charges stemming from the shooting death of Odin Lloyd and is being held without bail. He also is under investigation in connection with a double murder outside a Boston nightclub in July 2012.