The Directorate of Criminal Investigations (DCI) has confirmed the arrest of vocal activist Boniface Mwangi in connection with the facilitation of terrorist activities during the June 25, 2025, protests.

Mwangi was arrested on Saturday, July 19, 2025, by detectives at his residence in Lukenya in Machakos County.

During the arrest, detectives recovered two mobile phones, a laptop, several notebooks, tear gas cannisters and a blank round.

"He was later escorted to his office at Mageuzi Hub, Rose Avenue in Hurlingham, where a search led to the recovery of: nine assorted external hard drives, two laptops, company seals for Brave Media Ltd and Courage Ltd, a company stamp, six cheque books, copies of stamp duty documents, two unused tear gas canisters and one 7.62mm blank round," says the DCI in a statement.

The DCI adds that Mwangi is currently in custody at Pangani Police Station, where he is undergoing processing and will be arraigned on Monday, July 21, 2025.

He's set to be charged for offences related to facilitation of terrorist acts and unlawful possession of ammunition.

Last week, Mwangi, alongside Ugandan activist, Agather Atuhaire, filed a landmark case at the East African Court of Justice, accusing Tanzania of abduction, torture and unlawful deportation—and holding the East African Community itself accountable for staying silent.

The case, filed jointly with seven regional civil society groups, faults the governments of Kenya and Uganda, along with the Secretary General of the EAC, for failing to protect their citizens and uphold binding laws when the two activists were abducted in Tanzania in May 2025 and subjected to inhumane treatment.

They are demanding a formal apology from the governments of Tanzania, Kenya and Uganda; at least one million US dollars (Sh129 million) in compensation per victim; public condemnation of the abuse by the EAC Secretary General; and institutional reforms to prevent similar violations.