Police in Fairfield are investigating a Friday morning shooting at Laurel Creek Park.
Officers say the call came in shortly before 9:30 a.m.
Witnesses reported seeing several people run away in different directions. Investigators set up a perimeter to look for suspects.
The nearby Laurel Creek Elementary school was put on lockdown as a precaution.
Police say someone connected to the shooting was checked in at a local hospital with a serious gunshot wound. That person is said to be in critical condition.