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By James Novogrod and Alex Johnson

One of the people shot in last week's rampage at a Lafayette, Louisiana, movie theater is a cousin of Rep. Charles Boustany, R-Louisiana, Boustany told NBC News on Sunday night.

Two people were killed and nine others were wounded Thursday night when the gunman, identified as John Houser, used a legally purchased handgun to fire more than a dozen shots in the audience of a screening at the Grand Theatre 16 before killing himself, officials said.

"I didn't know either of the victims who were killed," Boustany said Sunday night, but "I have a cousin who was in the theater with her husband."

"Both were shot," Boustany said after an evening vigil at St. John's Cathedral. "They're both doing OK."

IMAGE: Lafayette, Louisiana, church service
A woman hugs a child during a church service Sunday at Our Lady of Fatima Catholic Church in in Lafayette, Louisiana, to honor the victims of a deadly shooting at the Grand 16 Theatre last week.Brynn Anderson / AP

Jerry Ramsay and her husband, Bo, "are recovering from the incident and are in good spirits," their family said Sunday night.

"Bo and Jerry have received an outpouring of expressions of sympathy during this time of grieving," the family said in a statement. "They know that just as they heal, so will our community heal."

Boustany, who represents Lafayette, his hometown, has been in since Friday morning to check on his constituents and to "make sure everything is OK with family, as well."

Authorities haven't yet determined why Houser opened fire in a showing of the romantic comedy "Trainwreck," why he picked Lafayette or why he chose Thursday evening.

Houser had been involuntarily hospitalized for mental conditions in Georgia and was denied a concealed weapons permit in Alabama in 2006 because of a domestic violence complaint and a previous arrest connected to an arson plot.

Louisiana Gov. Bobby Jindal told NBC News on Sunday that Houser shouldn't have been allowed to buy the gun.