Police were investigating an assault they said happened in Forest Park on Sunday morning.
Police said that a 19-year-old claims he was assaulted by two teenagers in a wooded section of the park.
He said no weapon was shown, but the suspects took his book bag and other items.
Anyone with information is asked to contact the Springfield Police Department's detective bureau.
Police are also investigating two shootings from overnight.
They said the first happened on Dexter Street in the Six Corners section of the city.
Police responded to a shot spotter activation around 3:30 a.m.
There were no victims.
Detectives were called back around 11 a.m. to take photographs of the scene.
Police also said that just before 5 a.m., they were called to Montcalm Street in Indian Orchard.
A resident told police that they heard gunfire and discovered a bullet hole in a window.
Police said a car parked next to the residence was also struck by gunfire, but no one was injured.
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