A fourth policeman in Kenya is in custody in connection with the murder of human rights lawyer Willie Kimani and two others.
Three others appeared in court on Monday.
The charges against the fourth man have not been made public but the prosecution filed an application to detain him for 14 days as they continue investigations.
Lawyer ‘beaten and strangled to death’
A post-mortem report Kimani’s  death, his client and their driver has showed they were brutally beaten before they were killed.
It reveals that they were beaten and strangled.
The three disappeared after attending a court case and their bodies were recovered a week later from a river near the capital, Nairobi.
The pathologist found that lawyer Willie Kimani was hit on the back of his head repeatedly with a heavy blunt object until his skull fractured.
Taxi driver Joseph Muiruri also had injuries to his head and was strangled.
But it was the lawyer’s client Josphat Mwenda who appeared to have suffered the most.
The report says Mr Mwenda had injuries to his head, his neck and chest. His skull was fractured and blood was also found on his chest cavity.
The brutal murders have sparked national outrage.
@BBC