According to police representatives, the incident took place in a private house, where there was a student party. Most likely, the shooting has provoked by a domestic conflict.
The condition of three of the seven victims is evaluated by doctors as critical. The police have already arrested a 22-year-old man who allegedly opened fire.
On Tuesday it was also reported that an unknown person opened fire by a university dormitory in the city of Clarksville, Tennessee. The attacker wounded five people who were hospitalized by a helicopter.
Another similar incident occurred in the US on February 5, 2015. Four black unidentified men, dressed in black, opened fire during a basketball game at a school in the state of Maryland. Two students were wounded and they were also taken to hospital by helicopter.