Suspected gunman kills man at Orlando immigration office before leading police on chase to Osceola County

ORLANDO, Fla. — A man was fatally shot Monday morning at a U.S. Citizenship and Immigration Services office, the Orlando Police Department said.

Photos: Deadly shooting reported at Orlando immigration office

Police said a gunman drove up to a man and woman outside the federal agency’s Orlando Field Office on Corporate Centre Boulevard near Lee Vista Blvd and South Goldenrod Road at about 10:15 a.m.

They said the gunman shot the man to death, and the woman was able to escape.

Investigators said an officer spotted the gunman’s vehicle, and the suspect led police on a chase to a home near Kissimmee -- about 15 miles away. That is where he was arrested.

Orland Police have confirmed that the shooting was domestic in nature. According to police, the man who killed was with a female companion who was not hurt. The suspect was her ex-husband, police said.

Watch: Suspect in custody after deadly shooting at Orlando immigration office

Police said they have identified the suspect as Alberto Rivero-Milian, 52. He remains in custody in Osceola County Jail.

The victim has also been identified as 52-year-old Alberto Dominguez-Ortiz, police said.

Investigators said he had driven up to Orlando from South Florida with Rivero-Milian’s ex-wife.

Immigration attorney Rusten Hurd told Channel 9 that people in the building ran away from windows and doors in a panic after hearing the gunfire because they were scared someone was attacking the office.

“There was a desk inside the immigration officer’s office, and we all got down behind it -- probably 20 of us in a small office,” Hurd said. “It was really helpful for him to do that.”

The office will be closed Tuesday and will reopen Wednesday. Any missed appointments will be rescheduled.

Watch: Skywitness 9 over deadly shooting at Orlando immigration office

Rivero-Milian remains hospitalized and missed his initial court appearance on Tuesday.

He is being held in lieu of a $25,000 bail on charges of fleeing and alluding police in Osceola County.

He has not yet been charged in the shooting death.

Click here for instructions on how to download the WFTV Now app for your smart TV.

See an update from police below:

See video of the scene from Skywitness 9 below:

See video of the scene where the suspect was arrested below:

Jason Kelly

Jason Kelly, WFTV.com

Jason Kelly joined WFTV in 2014.