A truck carrying Kenyan soldiers was attacked near the border with Somalia on Thursday, seriously injuring three of them.
Since 2013, over 200 people both civilians and military forces has been killed in the incessant attacks. Concerns about security have caused havoc on Kenya's tourism industry, including holiday season, Reuters says.
"The soldiers were going to fetch water from a borehole in Mangai village, Lamu East, when militia attacked them by shooting at their lorry," Lamu County police commander, Ephantus Kiura, said.
"Three soldiers were critically injured in the incident and were airlifted to a nearby naval base where they are receiving treatment."
The attack took place some 80 km from Lamu Island - an ancient trading port and popular tourist resort - and about 100 km from the site of attacks last June and July in which gunmen killed about 100 people.
The al Qaeda-linked al Shabaab claimed responsibility for those attacks, saying it would continue its assaults to persuade Kenya to pull its troops out of Somalia, where its forces have joined other African Union troops battling the militants.
A spokesman for the militant group could not immediately be reached.
Thursday's attack was similar to an incident last June in which two soldiers were killed after the truck they were using to ferry food to their colleagues in Somalia was attacked after it stalled