The families of Iraqi military members attacked by ISIS in June stormed parliament in Baghdad Tuesday, demanding more information about the fate of their loved ones, a parliamentary official told CNN. More than 100 family members clashed with security before entering the building, located in the International Zone, commonly known as the Green Zone. They vandalized the interior and became aggressive with people inside, the official said. They are refusing to leave until their concerns are addressed. The families are angry over the lack of information about the victims of an alleged massacre of Iraqi forces and cadets near Tikrit, when a military base formerly known as Camp Speicher was overrun by ISIS in June.