CHICAGO (AP) — Chicago police officers offered first aid to a dying suspect after a shootout that left three other officers injured on the city's West Side, the police department said Tuesday.

Chicago police spokesman Anthony Guglielmi said early Tuesday that the wounded officers are doing well after the incident in the Homan Square neighborhood.

The officers had been investigating drug activity late Monday when they saw a man and a woman acting suspiciously, Guglielmi said. The pair fled, the officers gave chase and the man opened fire, hitting three of them multiple times. One of the officers returned fire, fatally injuring the suspect.

Officers at the scene with first aid kits and bandages were able to apply preliminary care while they waited for Chicago Fire emergency crews, Guglielmi said.

"The officers were trained by CPD in LEMART — Law Enforcement Medical AND Rescue Training — which is designed to render life-saving aid following tactical and emergency situations," he said in an email.

The Cook County medical examiner's office has not identified the dead man pending notification of family.

A gun used by the dead suspect was recovered at the scene.

The woman was arrested Monday night after a chase. She was questioned but has not been charged, Guglielmi said.

Mayor Rahm Emanuel and Interim Police Superintendent John Escalante visited the officers and their families at the hospital. The shooting follows the mortal wounding of an undercover narcotics officer in Maryland who was shot by a colleague as a gunman attacked a police station Sunday night.

"Every day the dedicated men and women of the Chicago Police Department put themselves in danger so the rest of us can be safe," Emanuel said in a statement late Monday. "Tonight we were reminded of the dangers that our police face, and the bravery that they routinely display."

Escalante praised the Illinois State Police for closing an expressway to allow the wounded officers to be quickly transported to the hospital. Dozens of police officers met the ambulances at the hospital.

"I want to thank Chicago Fire Department paramedics for their quick response in getting our officers here safely," he said. "Again, a thanks to the staff here at county hospital for taking care of our injured officers."

Escalante said the officers have 10 to 12 years of experience and suffered "lowered body injuries."

Police said in a statement that the city's Independent Police Review Authorities will investigate. The officers involved will be put on standard administrative duties for 30 days.