A West Virginia firefighter accidentally himself in the leg while at the station late Tuesday.

The incident happened shortly after 11 p.m. at the Charleston Fire Department's Station No. 7, WSAZ-TV reports. Firefighter Isaac Brunetti was putting his personal firearm in his locker when the gun went off, injuring him in the leg.

Other firefighters helped treat Brunetti, and he was taken to the hospital, where he was later released. No one else was injured in the incident.

Brunetti was on duty at the time, according to WOWK-TV, and the fire department is conducting an internal investigation into what happened. The Charleston Police Department also is investigating the matter.