A policeman and a terror suspect have died and another policeman injured after a hand grenade exploded in the Kenyan coastal city of Mombasa.
A suspect was detained in an anti-terrorist operation and was being taken to the central police station for interrogation.
Whilst he was seated in the back of a police vehicle, being guarded by two police officers, he managed to detonate an explosive device concealed on his body.
The grenade went off just outside Mombasa Central Police Station in the city's centre.
The BBC's Noel Mwakughu in Mombasa says that it is a miracle that there were no more casualties as many people were returning from work at the time of the blast in a busy commercial area of the city.
The two policemen and the bomber were rushed to a hospital in the city where one officer and the suspect were pronounced dead.
The police say they were looking for two men in the Old Town of Mombasa in connection with an incident involving the discovery of some guns.
The other man with the suspect escaped.
The BBC's Andrew Harding says it is not clear yet whether these were suspected criminals or terrorists.
Last November, al-Qaeda claimed responsibility for a bomb attack at a Mombasa hotel and a failed missile attack on an Israeli passenger jet.
Since then America and Britain have both put out security alerts warning that al-Qaeda cells remain active in the region.