HOUSTON — One of the four Houston Police officers shot Monday while serving a warrant at a southeast Houston home had been shot several times previously in his career, according to Chief Art Acevedo.

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The officer, 54, has been with HPD since 1984. Chief Acevedo said he had been shot "several times" in the line of duty before Monday.

“He’s the case agent on this case, and he was there on the front lines,” Chief Acevedo said. “If that doesn’t tell you about the heart of the men and women we have the privilege to lead, I don’t know what will.”

Two of those officers are in critical condition and were undergoing surgery Monday night at Memorial Hermann Hospital. Both were shot in the neck.

Two other officers are stable and are expected to make a full recovery.

A fifth officer suffered a knee injury during the shootout and was released from the hospital Monday night.