By CBS 2 Chicago Staff

CHICAGO (CBS) — A person of interest was taken into custody late Thursday in a stabbing that killed a doctoral student downtown last weekend.

Police confirmed early Thursday evening that a person was being questioned.

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The man is suspected in two other violent attacks in addition, as CBS 2’s Brandon Merano reported.

Police believe the person responsible lived in a nearby homeless encampment.

People living in the area have questioned the city about what’s being done to catch the person responsible for the different attacks – all on women.

“It’s been really scary, as a female,” said one woman who lives nearby.

The incidents all took place less than 10 days apart.

The first was June 10, in the 500 block of South Franklin Street. A 25-year-old woman was hit from behind with an object.

Days later on June 13, an almost identical crime near the Congress Hotel on East Ida B. Wells Drive. This time, the victim was 50 years old.

And then the stabbing on this past Saturday, the killing of 31-year-old University of Maryland doctoral candidate Anat Kimchi on South Wacker Drive at Van Buren Street.

Xan Hermann lives nearby.

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“It’s just like a never ending list of people and it’s really upsetting,” Hermann said. “It’s a shame honestly.”

Chicago Mayor Lori Lightfoot addressed the attacks on Monday.

“We know who he is,” Lightfoot said. “We have good film of him.”

CBS 2 reached out to the Chicago Police Department and the mayor’s office on Thursday, asking why the footage isn’t being released.

Police refusing to release the video, but not giving a reason why.

And the mayor’s office said talk to the police department.

People living near the crime scenes feel for those who were attacked.

“There’s nothing that can take away the pain,” Hermann said. “But I just hope this guy is caught and justice is served.”

Something police are still working to make happen, 14 days after the first stabbing.

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“It’s, it’s scary,” said one woman.

CBS 2 Chicago Staff