A British man who was killed in Kenya on Saturday was a special constable with the Metropolitan Police.
Jamal Moghe, 26, from Wembley, north-west London, also worked as a civilian employee of the Met based at Ealing in west London.
He is believed to have been killed by bandits while travelling on a charity trip.
Ealing borough commander Andy Rowell said: "We were all shocked and saddened to hear of Jamal's death."
Mr Moghe was a criminal exhibits officer in Ealing and also worked as a special constable - a volunteer police officer - in his home borough of Brent.
Cdr Rowell said: "He was a popular member of the team at Ealing borough and he also chose to serve his community by volunteering as a special. Our thoughts are with his wife and family at this time."
A Foreign Office spokesman said: "We can confirm the death of a British national on 12 January and we are providing consular assistance to the family at this difficult time."
A source told the BBC Mr Moghe had been on the way to Marsabit, towards the border with Ethiopia, to see his family.
It was Mr Moghe's first visit to the region in about 15 years, the BBC understands. He is understood to have been buried in the town of Isiolo within 24 hours of the attack - in line with Muslim tradition.
North-eastern Kenya, bordered by Ethiopia and Somalia, is a remote and sparsely populated area where lack of security is a problem.
The BBC understands the bus in which Mr Moghe had been travelling was sprayed with bullets by the bandits and no passenger was singled out.
But the BBC's Noel Mwakugu, in the capital, Nairobi, says official details of the attack are sketchy and Kenyan police do not have further information about the incident.
Odiambho Joseph, from the BBC's Swahili service, says banditry has been on the increase recently and in the last year several Kenyan policemen have been attacked and killed by suspected Islamist militants from Somalia.
The Somali al-Shabab group vowed to take revenge when Kenya sent troops into Somalia in October 2011 to help the UN-backed government seize territory from the militants.
The Times's Africa correspondent, Jerome Starkey, tweeted: "Brit cop Jamal Moghe was shot in a moving vehicle and nothing was stolen once the truck overturned, say provincial Kenyan police chief."
He said there were only nine passengers in the vehicle.