Army spokesman Emmanuel Chirchir said four other soldiers were wounded when the truck was hit after driving over the device while on patrol in the frontier town of Mandera.
Kenya has been plagued by a wave of guerrilla-style attacks since it sent troops into Somalia in October to crush Islamist al Shabaab rebels, accusing the militant network of frequent attacks on its security forces and tourists inside Kenya.
"Following this incident, five KDF (Kenya Defence Forces) soldiers were seriously injured and have been airlifted to Garissa for treatment. By the time of this release one of the injured had succumbed to his injuries," Chirchir said in a statement.
Chirchir said the truck had 13 soldiers onboard.
Local media said 11 troops were wounded in the attack in Mandera, located in Kenya`s sparsely populated far northeast, close to the porous borders with Ethiopia and Somalia.
Chirchir also confirmed that Kenyan fighter jets had bombed two Islamist militant bases in Somalia on Wednesday, near the town of Badade -- part of a series of strikes on what its military says are rebel targets.
Kenya, the region`s biggest economy, is the latest of a string of foreign powers to try to stabilise Somalia, which has been mired in violence for two decades since the overthrow of dictator Mohamed Siad Barre in 1991 allowed first warlords, then Islamist militants, to step into a power vacuum.
Al Shabaab, fighting to impose a harsh interpretation of sharia law, has vowed revenge against Kenya and to bring the "flames of war" to its neighbour. (*)
Editor: Kunto Wibisono
Copyright © ANTARA 2011
