A 26-year-old Reston man is facing a weapons charge in connection with a Friday morning shooting that left a 17-year-old acquaintance of his hospitalized in critical condition, authorities said.

Fairfax County police said in a news release Saturday that Javier DeJesus Martinez, who lives in the 2200 block of Marginella Drive, was charged with possession of a firearm by an illegal alien as detectives continue to investigate the incident in which a 17-year-old acquaintance of his was shot. They said police need to determine “all of the circumstances surrounding the incident and whether or not it was accidental or suspicious in nature.”

The shooting occurred about 10:15 a.m. Friday at Martinez’s home in the Reston area, authorities said. Police said they were called to the residence in response to a report of a person being shot and arrived to find the 17-year-old, who is also from Reston, with life-threatening injuries.

Police did not identify the 17-year-old or provide any other specific details of the incident. Lucy Caldwell, a Fairfax County police spokeswoman, said detectives were still probing precisely what happened but did “not believe there was a threat to the community.”