Four people are being treated for injuries after being hurt in an explosion during a target shooting incident in an area near Chimney Dr. in Sun Valley.

Washoe County Sheriff’s Officials say around noon Saturday, two women and two men were hit by metal shrapnel after an oxygen bottle was shot at, and exploded.

The four were reportedly not target shooting themselves, but watching others practice.

The 24-year-old woman was taken to Renown by Care Flight where she was treated for lacerations and possible broken bones in her legs. The two men were transported by REMSA for cuts and possible lower leg fractures. The other woman took herself to Renown after suffering minor cuts.

Police say the incident is still under investigation, but alcohol doesn’t appear to be a factor.