HOUSTON >> A Houston police helicopter crashed early today, killing one of the two officers on board and critically injuring the other, officials said.

A pilot and tactical flight officer were aboard a police helicopter when it crashed at an apartment complex around 2 a.m. They were flown to a hospital where the tactical flight officer died, police Chief Art Acevedo said hours after the crash during a news conference where he was joined by the city’s mayor, Sylvester Turner.

The department later tweeted that the officer who died was Tactical Flight Officer Jason Knox. He is survived by a wife and two young children, who were at the hospital along with his parents and in-laws, Acevedo said at the news conference.

“Jason will be missed but we will carry him in our hearts and in our memories. We will forge ahead as a department & as an Air Unit, because Jason would demand it of us. When knocked down this man always got back up,” the chief said in a statement accompanying the release of Knox’s name.

The pilot, whose name wasn’t immediately released, underwent surgery and was “very banged up,” but police were hopeful he would survive, Acevedi said, noting that investigators still didn’t know what caused the crash.

There were no injuries to anyone on the ground at the apartment complex, a masked Acevedo told reporters.

The helicopter was supposed to assist with a search for bodies in a nearby bayou, which was prompted by a tip that the police chief characterized as “probably a bogus call — we don’t know.”

The officers were trapped in “mangled” wreckage before being cut out by city firefighters who worked for about an hour, Acevedo said, praising the fire department as “phenomenal.”

Acevedo identified two silver linings at the first news conference: While the wreckage was “pretty significant,” it didn’t catch fire, and the helicopter avoided striking occupied apartment buildings. It did clip the Biscayne at Cityview complex’s clubhouse, he said.

The police department is shutting down flights until it has a chance to reassess in the coming days, and will be relying on the Texas Department of Public Safety and Harris County Sheriff’s Office for flight support in the interim.

Acevedo identified the helicopter as “75 Fox.”

“It’s pretty ironic that yesterday we graduated a class and we had Fox fly out because we had COVID, so we couldn’t do your traditional graduation so we wanted to do something special,” Acevedo said. “And if somebody had told me that a few hours later that we had an aircraft down and we’d lose a really good man, I would have said ‘No way.’”

The National Transportation Safety Board and Federal Aviation Administration will investigate, Acevedo said, while the police department conducts a parallel homicide investigation.

Turner, the mayor, called on the people of the city “to continue to lift up, number one, both families, but especially lift up the family of the police officer who has died this morning. And then at the same time lift up the entire HPD family.”

Acevedo noted that shots rang out across the street from the scene at around 3 a.m. Six people were taken into custody, he said. Acevedo stressed that police had no information indicating that the helicopter might have been taken down by hostile action.