Somali Islamist militants sprayed a Kenyan bus with bullets on Monday, killing two people, but a passenger said he and fellow Muslims defied demands from the attackers to help identify Christians traveling with them.

The attack took place in Mandera, in northeast Kenya. A year ago, al-Shabaab gunmen stormed a bus in the same area and killed 28 non-Muslim passengers.

Abdi Mohamud Abdi, a Muslim who was among the passengers in Monday's incident, said more than 10 militants boarded the bus and ordered the Muslim passengers to split away from the Christians, but they refused.