At least one person, a young girl, was killed and 11 others injured when gunmen attacked three buses in three separate incidents in Marsabit county.
Among those injured on Sunday were two police officers returning to their workstations, police said.
The first incident happened at Gof Choba area on the Moyale-Marsabit highway, another one in Horondera while the third, believed to be a revenge attack, took place near Marsabit town.
Police who responded to the scenes said they did not find the gunmen. Both police officers were flown to Nairobi while a young girl who was in the bus died of her injuries.
The others were admitted to the Marsabit County Referral Hospital.
It was the second night attack on bus convoys in a week. In Elgeyo Marakwet last Thursday, a driver was killed and 13 students and a teacher were injured.
Police say they have intensified operations and investigations to arrest those behind the attacks.
Eastern police boss Rono Bunei said they had deployed more personnel and urged the local political leadership to play an active role of ensuring peace.
Local authorities said they believe the attacks are politically motivated. Others are driven by inter-clan fighting.
The infighting has caused deaths and destruction of property in the area for a long time and officials fear the situation will get worse ahead of the August polls.
On February 22, President Uhuru Kenyatta gave Marsabit leaders two weeks to come up with a lasting solution to the communal conflicts that have bedevilled the county.
The President cautioned the leaders that failure to bring forward a concrete strategy to stop the conflicts will push the government to deploy security agencies with strict instructions to use force to end insecurity.
Kenyatta spoke at State House, Nairobi, when he hosted a delegation of leaders from Marsabit, Isiolo and Tana River counties.
The President emphasised the need for Marsabit leaders to change their approach and work together to promote unity instead of fuelling conflicts.
“Peace is an important thing that brings a lot of benefits. Make peace so that you can benefit fully by being at the centre of government. Instead of focusing on war and petty tribal clashes, focus on how you will uplift the lives of the people of Marsabit county,” Kenyatta said.
He once again advised leaders across the country not to allow political competition to undermine peace and security, urging them to work together towards uniting all Kenyans.
Regarding taking services closer to wananchi, Interior Cabinet Secretary Fred Matiang’i said already the government has commenced the process of creating six new subcounties in the three counties to accommodate communities.
He assured leaders that the government will also review police deployment in the Northeastern region to tackle security challenges.
(Edited by V. Graham)
