PARK FOREST, Ill. (CBS) — Police in Park Forest on Monday night were investigating a shooting inside an apartment building that left a man critically injured.

The shooting happened around 9:20 p.m. Sunday in an apartment building in the 100 block of East Sycamore Drive in the south suburb, police said.

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Numerous shots were fired within the common areas of the apartment building, and one 23-year-old man was critically injured and taken to the hospital by Park Forest paramedics, police said.

The man was believed to have been targeted, police said.

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Anyone with information about the incident is asked to call the Park Forest police Investigations Division at (708) 748-1309.

Park Forest police also noted that families who live in the building where the shooting happened and need assistance may call Community Engagement Coordinator Rachel Wax at (708) 748-9536, or by email at rwax@vopf.com.

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The investigation into the shooting continued Monday night. Police did not release further details.