INGLESIDE, Ill. (CBS) — A woman was stabbed while walking with her young child in a forest preserve in the far north suburbs Monday afternoon.

As CBS 2’s Charlie De Mar reported, police sources late Monday called the stabbing random. A woman was being questioned as a person of interest Monday night.

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The incident happened in the Grant Woods forest preserve, at 25713 W. Rollins Rd. in Ingleside near the boundary with Round Lake, according to the Lake County Sheriff’s office.

As it was heard on a radio dispatch call: “Looking for a stabbing victim – she is conscious, she is breathing. It is unknown where the offender is at this time. Ran southbound. Lake County sheriff is currently en route.”

Police say the stabbing happened around 4:20 p.m.

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The woman was attacked when she was walking through the area with her son, who is under the age of 10, police said. The woman suffered non-life-threatening injuries.

The victim was taken to Advocate Condell Medical Center in Libertyville for her injuries, police said.

Sources said the female attacker ran away as a bystander called police for help.

The suspected assailant ran off, but was in custody shorty afterward. The boy was not injured.

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The motive for this stabbing is unclear tonight. Police say the woman has serious cuts but is expected to live. The young boy was uninjured.

Charlie De Mar