ORLANDO, Fla. (AP) – A hearing on releasing some 911 calls from the massacre at a gay nightclub in Orlando became a forum for family members to express their frustration over the lack of information released about the investigation.

Many of the half dozen family members and their representatives who testified Monday in an Orlando courtroom say they want more information about the shootings that left 49 people dead at Pulse Nightclub on June 12.

The FBI has offered no indication of when the probe into the shooting that also left 53 people wounded will be done.

Media groups want the calls released so the public can evaluate the police response to the worst mass shooting in modern U.S. history.

The city of Orlando says the 232 calls depict suffering and shouldn’t be made public.