Three people were injured, including a Tulare County Cal Fire firefighter, while fighting a fire near the community of Three Rivers.
Cal Fire officials say the three people were fighting a 2- to 3-acre fire on Case Mountain when a tree fell on them.
The firefighter sustained major injuries and was airlifted to a Fresno hospital.
The inmates suffered minor injuries including a concussion and cuts.
No other information on their conditions has been released at this time.
Cal Fire officials say they will begin an investigation into the incident at "first light."