Al-Shabab extremists killed three people in an attack in eastern Kenya, police said Monday.

A Kenyan government official says four people are dead after a raid by suspected al-Shabab extremists in eastern Garissa County.

Somalia's homegrown Islamic extremist rebels, al-Shabab, have claimed responsibility for a truck bomb in the capital, Mogadishu, that killed at least 79 people last week, including many students.

Police in Kenya say suspected al-Shabab extremists have stopped a bus in the north near Somalia and killed eight passengers, all of them non-Muslims.