About 13 people have been killed after a vehicle they were travelling in ran over an improvised explosive device (IED).
The tragedy occurred in Arabia, Mandera county.
The matatu was heading to Madera town when the tragedy occurred.
The scene of the tragedy is close to the Somali border.
The incident has hampered transport activities in the area as local motorists now fear for their lives.
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Nobody has been arrested over the matter.
Police told a local daily that the tragedy was staged by Al-Shabaab Militants.
The exact number of people who were on board the matatu is yet to be revealed.
Reports indicate that the number of people exceeded the maximum requirement of 14 that the matatu was supposed to carry.
Witnesses say the death toll could rise given that several people were seriously injured.
The North-Eastern part of Kenya has borne the brunt of insecurity that has been occasioned by Al-Shabaab militants.
IED has been a common form of attack targeting police vehicles carrying out patrols.
The incident comes a few days after France, Germany and the US issued security alerts to its citizens living in Kenya.