Five Houston police officers were injured in an ambush-style attack on Monday night while investigating a suspected drug case.
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The officers were met with gunfire "immediately upon reaching the door" while serving a search warrant at a home in southeast Houston, according the Houston Police Department.
Four officers were struck with gunfire and a fifth sustained a knee injury, according to the department.
"This has been a tough day for our city. I encourage all Houstonians to pray for our police officers who were shot today," Houston Mayor Sylvester Turner said during a press conference on Monday. "One will be discharged tonight, thank goodness. Pray for their families, too!"
The wounded officers were transported to a local hospital. Two of the officers were in critical, but stable, condition and two others were in good condition but being held for observation, the department said.
One officer, who was shot in the shoulder, has been released from the hospital, authorities said. None of the remaining officers still in the hospital will be released tonight.
"As a result of exchange of gunfire between our officers and one or two suspects, we have five officers injured," Houston Police Chief Art Acevedo said during the press conference. "Four were struck by gunfire, two officers are currently in surgery. They are in surgery for gunfire sustained and they are in critical but stable condition. We're hopeful that with the prayers of this community that they will recover."
Acevedo said two suspects were killed at the home and the department is looking for other possible suspects.
At this time we can confirm 5 officers have been struck and transported to Memorial Hermann Hospital, Medical Center and Ben Taub General Hospital. Further updates will be provided as available. #hounews— Houston Police (@houstonpolice) January 28, 2019
Texas Gov. Greg Abbott offered his condolences in a statement in the wake of the "horrific attack."
"This evening’s horrific attack on police officers is a solemn reminder of the service and sacrifice our brave men and women in law enforcement make every day to keep us safe," Abbott said. "The city of Houston and the Houston Police Department will have whatever state resources they need to bring swift justice to those involved."
ABC News' Marilyn Heck contributed to this report.