Tanzanian police have arrested a U.S.–Kenyan dual citizen and serving U.S. Army sergeant after he was allegedly found carrying four CS M68 hand-thrown grenades at the Sirari border while entering the country from Kenya. The arrest took place on November 16, 2025, at around midday and has prompted a detailed security investigation in the Tarime–Rorya Region.
According to a public statement issued by the Regional Police Commander, the suspect, 30-year-old Charles Onkuri Ongeta, was stopped at the Tanzania–Kenya border during routine checks. He was driving a Toyota Land Cruiser with registration number KDP 502Y when officers discovered the explosives.
“Police officers arrested Charles Onkuri Ongeta, a dual citizen of the United States and Kenya, and a U.S. Army soldier holding the rank of Sergeant, after he was found in possession of four CS M68 hand-thrown grenades while entering Tanzania from Kenya,” the statement said.
Police confirmed that Onkuri is a dual citizen of the United States and Kenya and serves in the U.S. Army with the rank of Sergeant. His attempt to cross into Tanzania with the grenades immediately raised alarm, given that the country’s firearms laws strictly prohibit such weapons.
Authorities stressed that the grenades are not allowed under any circumstances. The Regional Police Commander noted that “even if he had applied for permission to enter with such weapons, he would not have been allowed,” highlighting the seriousness with which Tanzania handles unauthorized military equipment.
The CS M68 grenades in question are typically used for military or tactical purposes, making their discovery at the civilian border crossing particularly concerning for security agencies.
Police said they have launched a full investigation into the matter. “Evidence continues to be collected alongside ongoing interrogations regarding these allegations so that appropriate legal action can be taken against him,” the commander added.
Onkuri remains in custody as investigators work to establish the motive behind transporting the grenades and whether more individuals may be involved.
