A man is expected to be OK after a domestic dispute turned violent outside a north Houston federal immigration field office Friday morning.

A woman and her boyfriend had just arrived at the U.S. Citizenship and Immigration Services field office at 810 Gears when the woman's ex-boyfriend – who had been following the couple – showed up, according to Houston Police Cmdr. Steve Spears. The ex-boyfriend allegedly brought a gun and pulled it on the couple when a struggle ensued between the two men, Spears said.

During the struggle, the woman's boyfriend was shot in the chest, Spears said. He was rushed to an area hospital, where he is expected to survive.

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Security officers at the field office quickly detained the ex-boyfriend before Houston police officers arrive, Spears said.

It's uncertain why the couple was going to the ICE office. However, roses could be seen scattered in the parking lot where the altercation happened.

A spokesperson for U.S. Citizenship and Immigration Services said no one inside the field office was involved nor injured and the office remains open. The case will be referred to the Harris County District Attorney's Office.

Jay R. Jordan covers breaking news in the Houston area. Read him on our breaking news site, Chron.com, and our subscriber site, HoustonChronicle.com | Follow him on Twitter at @JayRJordan | Email him at jay.jordan@chron.com | Text CHRON to 77453 to receive breaking news alerts by text message