From the article:

Mayor Brandon Johnson‘s office said they were informed of the University of Chicago Police Department’s intention to dismantle the encampment early Tuesday morning and reached out to “reiterate serious safety and operational concerns about this plan.”

In an updated statement released Tuesday afternoon, the mayor’s office said University police requested Chicago police’s assistance but CPD “expressed an unwillingness to participate.”

University police “ultimately decided to move forward with the removal independently,” according to the mayor’s office.

Damn, even Mayor Brandon Johnson can't get them to stop and I like that guy.