SUNRISE, FLA. (WSVN) - New details have been released in a Sunrise shooting that left two FBI agents dead.

The FBI has identified the suspect involved as 55-year-old David Lee Huber.

Investigators said Huber killed Special Agents Daniel Alfin and Laura Schwartzenberger and injured three other agents when they tried to issue a search warrant in a child pornography investigation, early Tuesday morning.

“This individual on the other side of that door was hellbent on utilizing an assault weapon to kill law enforcement officers,” said former FBI Agent Stuart Kaplan.

Huber reportedly monitored the agents using a doorbell camera before opening fire.

“The FBI lost the element of surprise not only by the fact that they had a knock on the door, but if you take a look at the property itself and the way it was situated, there was a large bay window adjoining the front door,” Kaplan said.

Officials said the suspect then barricaded himself before killing himself.

Aerial views showed dozens of pieces of tape on the window and front door of the first-floor apartment where the shots came through.

According to public records, Huber had a computer consulting business and had a pilot’s license that was issued in 1994. He had gotten married in 2000, separated from his wife in 2009 before divorcing in 2016.

He and his ex-wife also had two minor children at the time of their divorce.

However, at some point, he became the subject of a criminal investigation involving children.

Agents hope to learn more from the evidence they have gathered at the scene.

Serving warrants is dangerous work. In 2005, a Broward Sheriff’s Office deputy was shot and killed doing exactly that. Seven years later, four Miami-Dade Police officers were shot serving a warrant on a murder suspect; two of them died.

For the FBI, however, the focus now is on the families of Agents Alfin and Schwartzenberger.

As far as the other three agents injured in the shooting, the last one was released from the hospital Wednesday.

FBI Director Christopher Wray flew in from Washington, D.C., to visit the Alfin family at their Weston home.

Schwartzenberger’s body left the medical examiner’s office with a police escort.

“It’s just an incredible woman that will forever be a hero in our hearts,” said Michelle Brown.

Brown is the owner of CrossFitVice, a gym where Schwartzenberger worked out and sometimes brought her young sons. She’s spearheading a fundraising effort for the family.

“We have a number of agents, a number of first-responders who are on the front lines every day, serving our community, keeping children safe,” Brown said. “It’s just an incredibly courageous act that they do day-in and day-out. We’re just so sad to have lost a friend. For the boys who have lost a mother, it’s nearly unimaginable.”

The shooting is being investigated by the FBI’s inspections division.

Schwartzenberger leaves behind her husband and two sons, 10 and 12.

To donate to the Schwartzenberger family fundraiser, click here.

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