Autopsy Reveals What Killed GSU Officer Shot By Arrow While Guarding State House

Mattanka was struck by an arrow while manning Gate D at State House, Nairobi.

Autopsy Reveals What Killed GSU Officer Shot By Arrow While Guarding State House
Collage of GSU officers (inset) and State House. /VIRAL TEA KE

An autopsy has confirmed that Police Constable Ramadhan Mattanka, the GSU officer killed while on duty at State House on Monday, died from excessive bleeding.

Mattanka was struck by an arrow while manning Gate D at State House, Nairobi. The post-mortem conducted on Tuesday, October 14, revealed that the arrow pierced through his left seventh and eighth ribs, penetrated the left lung, and punctured his heart.

Mattanka, who was Muslim, will be laid to rest today in Kajiado County after his burial was postponed at the request of investigators to allow time for the ongoing probe.

GSU officers during a past meeting at Nyayo National Stadium. /CITIZEN DIGITAL

Court Rules On Suspect Who Shot GSU Officer

Meanwhile, 55-year-old Kimunye Musyimi, the man accused of launching the fatal attack, will remain in custody for 14 days as investigations continue.

Musyimi, a resident of Makueni County, appeared in court on Tuesday, where detectives sought more time to finalize their inquiries. 

Preliminary findings indicate he travelled from Makueni to Nairobi on Sunday night before allegedly carrying out the attack the next morning. In court, the suspect—who appeared to be limping and required assistance from police officers—asked for permission to receive medical attention, which was granted by the court.

The incident unfolded on Monday morning around 8:10 a.m. near State House Gate D along Dennis Pritt Road.

According to police, the attacker, armed with a bow and arrows, confronted officers manning the gate and ignored repeated commands to surrender. He then fired an arrow that struck Constable Mattanka in the ribs.

Mattanka was rushed to Kenyatta National Hospital but succumbed to his injuries while receiving treatment. His body was later moved to the hospital mortuary for a post-mortem examination.

Investigations indicate the assailant, Musyimi, had earlier tried to enter State House posing as a street family member. He was carrying a large sack in which he had concealed the bow and arrows.

After being turned away, he reportedly lingered nearby and launched the attack when two officers were distracted while clearing a vehicle at the gate.

Police say Musyimi hid behind a car, took aim, and shot at Mattanka before being subdued and arrested by other GSU officers moments later.

Unconfirmed reports, however, suggest that the two may have known each other. CCTV footage reviewed by investigators allegedly captured a 17-minute interaction between them, hinting at a possible personal dispute that might have led to the attack.

Gate D, where the officer was stationed, serves as a screening point for the President’s authorized staff and visitors.

Serious questions are now being raised about the security failures that allowed the attack to happen at one of Kenya’s most secure locations.

Investigators are now tasked with determining whether the incident was a lone-wolf act, uncovering the real motive behind it, and explaining how a civilian armed with basic weapons managed to breach the perimeter of the President’s residence.

The main suspect in the arrow attack (centre) which saw the death of a GSU officer on Monday, October 13 2025. /FACEBOOK