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The officer was critically injured in the shooting attack at and near the hospital, 2525 S. Michigan Ave., about 3:20 p.m., a police spokesman said.

“He is in critical condition but receiving excellent care,” police spokesman Anthony Guglielmi said. “Please send your prayers.”

There were “Reports of multiple victims” in the attack, Guglielmi said in a tweet. Fewer than six people were believed shot, according to an official.

“Officers are doing a methodical search … At least one possible offender is shot,” Guglielmi said.