IOWA CITY, Iowa (AP) -

A prosecutor says she will release additional information about the investigation into the March 10 shooting death of a University of Iowa graduate student who was killed during a confrontation with police.

Johnson County Attorney Janet Lyness has scheduled a news conference for Friday afternoon in Iowa City to discuss the death of 28-year-old Taleb Salameh.

Police have said that Salameh opened fire on police officers who responded to a domestic disturbance call at a North Liberty trailer park. Officers exchanged fire with Salameh, who died at the scene.

Three officers were treated for injuries and released.

Lyness will be joined by Johnson County Sheriff Lonny Pulkrabek and Iowa Division of Criminal Investigation special agent Bill Kietzman, whose agencies led the investigation into the shooting.