By Jane Sutton

MIAMI (Reuters) - Seven people were shot and killed at an apartment building in a Miami suburb early Saturday, including the suspected gunman who was holding two hostages when a SWAT team moved in, police said.

The hostages were rescued unharmed, Hialeah Police Sergeant Eddie Rodriguez told NBC News.

The standoff began on Friday evening during an argument between the gunman and the husband and wife who ran the apartment complex. Their bodies were among the six found after the SWAT team moved in on Saturday morning, police said.

The gunman lived in a fourth-floor apartment with his mother, the Miami Herald quoted the landlords' daughter, Shamira Pisciotti, as saying.

The couple, 78-year-old Italo Pisciotti and 68-year-old Samira Pisciotti, went to the unit to discuss a problem with the gunman, who opened fire and killed them both, their daughter told the newspaper.

Three other victims were found shot to death in that building and one was walking into a building across the street when the gunman shot him from a balcony, police said.

The shooter was barricaded inside a fifth-floor apartment with the two hostages when police negotiators made contact with him during the night. The SWAT team swarmed in after the talks broke down about 2 a.m., the Herald said.

The apartment complex in the blue-collar, mostly Hispanic community housed about 90 families.

(Reporting by Jane Sutton; Editing by Vicki Allen)