The trial of Kithuka Kimunyi Musyimi, accused of killing a GSU officer at State House Nairobi, commenced with witness testimonies detailing the fatal arrow attack on October 13, 2025.

• An eyewitness, GSU officer Kelvin Nyabuto, testified that the attacker appeared to be targeting security personnel.
• The accused, Kithuka Kimunyi Musyimi, allegedly approached Gate D armed with a bow and arrows.
• The attacker reportedly fired two arrows in quick succession, with the second one striking and fatally wounding Ramadhan Khamis Matamka.