According to the report in the CNN [read here], the deceased have been identified as Soroush Farazmand, 27, his brother Arash, 28 and another injured 35-year-old Iranian musician, Ali Eskandarian.
Farazmand was in a band named Yellow Dog's which was formed by him whereas his brother was a drummer with a band, Free Keys.
According to reports, the police said that the shooter, Ali Akbar Mohammadi Rafie was a member of the Free Keys. Police officials said that there was a small fight that broke out between, Rafie and the Yellow Dog.
Deceased brothers fled from Iran fearing backlash to their music
Both the brothers had fled Iran and had settled down in the United States fearing backlash in their country.
After the shooter opened fire at the brothers, he shot another man, an artist in the arm before he turned the gun on himself on the roof of a building.
Yellow Dogs, were termed as poineers of the independent rock scene in Tehran and had managed to garner attention, when the band contributed to the sound track of a film called, 'No One Knows About Persian Cats,' that won an award at the Cannes Film Festival.