(WBNG) -- The Broome County Sheriff's Office announced Wednesday four 18-year-olds were charged in an investigation into a deadly stabbing of 22-year-old Q-Quan Richardson in the town of Union on Aug. 26.
According to a news release, the sheriff's office says it arrested Brian J. Adams Jr., Christopher A. Lane, Thomas J. Hayward; of Endicott, and Noah B. Beauparlant of Endwell.
Adams and Lane were charged with two counts of hindering prosecution in the 1st degree, a class D felony.
Hayward and Beauparlant were charged with the same crime, but with only one count.
The total number of people arrested in the investigation is five. 22-year-old Caleb Casteline was charged with murder on Aug. 26.
The sheriff's office says the four 18-year-olds rendered criminal assistance to Casteline.
According to the sheriff's office, Richardson was stabbed by Casteline at a party at 1250 Robinson Hill Rd. An altercation preceded the stabbing.
The sheriff's office says the investigation into the stabbing is closed and no further arrests are expected.