A Fairfax County man was stabbed and killed and woman was wounded Thursday morning at an apartment complex in Seven Corners, county authorities said.

Police responded to a report of a stabbing at a low-rise brick apartment building on John Marshall Drive near Arlington Boulevard and Leesburg Pike about 6:20 a.m.

Authorities identified the dead man as Alvaro Zepeda, 44. A police helicopter located a man who police said fled the scene and was involved in the stabbings near the apartment. The man and the police officer suffered injuries while the officer was trying to catch him, authorities said.

The names of the alleged attacker and the woman were not immediately released.

Zepeda’s older brother, Rubelio Zepeda, said that the woman injured was his brother’s live-in girlfriend and that the attacker was a roommate. He said she told him that Alvaro Zepeda was coming out of the bathroom to get ready for work when he was attacked from behind.

She said the two men had not been arguing before Thursday morning’s incident, Rubelio Zepeda said.

“My brother was a calm, quiet person. He didn’t get in anybody’s business,” Rubelio Zepeda, 52, said. The apartments’ Web site lists him as a maintenance assistant.

“He was building a home back in our town and wanted to start a family, Rubelio Zepeda added. “He said he wanted to have a house that his children could inherit one day.”

Alvaro Zepeda had lived in that apartment since he came to the United States about 15 years ago, his older brother said. He is from El Progreso, a small town in the eastern part of Guatemala.

The family plans to send the body back to Guatemala, where Zepeda’s mother still doesn’t know of his death.

“She has been sick. This is going to kill her,” Rubelio Zepeda said.

None of the injuries to the alleged attacker, the woman and the police officer were considered life threatening, and the three were taken to hospitals, said Lucy Caldwell, a spokeswoman for the county police.

Police declined to provide details on the nature of their injuries.

Luz Lazo contributed to this report.