Updated 03/27/14 – 6:06 a.m.

NORTHFIELD, Ill. (CBS) — Trouble has found teenaged gangsta rapper Chief Keef — again.

Police in suburban Northfield and detectives from the North Regional Major Crimes Task Force are trying to determine who shot someone at the mansion at 815 N. Happ Rd., which is rented by Keef’s manager, Pierre Manuel.

Keef’s attorney told the Web site TMZ.com that the 18-year-old rapper did not fire the gun, but witnessed the shooting.

One person is known to have been wounded. Northfield Police said the victim was taken to NorthShore Skokie Hospital. As of Wednesday evening, he remained in the hospital’s intensive care unit, although his condition had stabilized.

Police blocked North Happ Road, a local thoroughfare, between Old Willow Road and Southgate Lane, and said in an e-mail to village residents that they expected it to remain blocked until Friday.

Residents only are being allowed into the area.

Nearby residents were generally reluctant to speak about the situation, but said Keef has attracted large numbers of friends and fans to the otherwise quiet neighborhood.

One woman said she was afraid of the cars that have often come and go at all hours and wondered if drugs could be involved.

Keef recently completed court-ordered drug rehabilitation, but since his release has posted a “selfie” on Instagram showing him blowing smoke, with something in his mouth. Last week, he was arrested in Highland Park for driving under the influence of marijuana.

Another Instagram posting, made Tuesday night, shows Keef holding a gun while an associate points an AK-47 assault weapon at the ceiling. In the accompanying caption, Keef wrote, “Another situation. Already.”

It was unclear what Keef meant, or if it had anything to do with the events leading up to the shooting.

Northfield police said the shooting remains under investigation, and asked anyone with information to contact the department at 847-441-3842. Although no one has been arrested, police said in a statement that the shooting “appears to be isolated and we believe the community is safe.”

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