Kenyan rights groups, lawyers and politicians voiced grave concern over a fresh spate of abductions targeting government critics on Friday.

A small protest was organised in northeastern Embu town, where a 24-year-old man, Billy Mwangi, disappeared last weekend.

Security forces in the East African nation have been accused of carrying out dozens of illegal detentions since youth-led anti-government demonstrations in June and July.

The latest disappearances have been primarily young men who have criticised President William Ruto online.

Police have denied involvement but activists have questioned why they appear not to be investigating the disappearances.

The Law Society of Kenya (LSK) said recent denials by the inspector-general of police were ?insufficient?, calling for him to take clear action against the kidnappers or resign.

?If indeed the police are not complicit?, LSK said, they must immediately ?investigate and prosecute those responsible?.

Human Rights Watch said earlier this year that its research pointed towards a unit drawn from multiple security agencies.

Former deputy president Rigathi Gachagua, who was ousted after clashing with Ruto over the protests, also alleged on Friday that a secret unit was behind the disappearances.

?Abducting these children and killing them is not a solution? This is the first administration in the history of this country to target children for repression,? Gachagua claimed at a press conference.

The Kenya National Commission on Human Rights (KNCHR) said Thursday there had been 82 abduction cases carried out ?clandestinely, with unidentified armed persons? since June, with 29 still missing.

It listed seven people who had been abducted since December 17.

Two of them ? Mwangi and Peter Muteti ? were taken shortly after sharing AI-generated images of Ruto dead.

The Kenyan Judiciary said this week that ?abductions have no place in law and indeed are a direct threat to the rights of citizens?.

In a post on X on Thursday, it urged ?security agencies and all connected entities to adhere to the law to safeguard fundamental rights and freedoms.?

The anti-government demonstrations earlier this year were sparked by proposed tax hikes, triggering the worst crisis since Ruto took power in 2022.

While large-scale rallies have mostly stopped, anger against the government has simmered, fuelled by a cost of living crisis and continued allegations of brutality by the security forces. (AFP)

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