One person was on Saturday night killed in Garissa town after an Improvised Explosive Device (IED) he was planting accidentally exploded on him.
The IED was being planted at Garissa Primary School ground in a dais where major public meetings are normally held. The gadget was discovered hours ahead of a Nark Kenya presidential candidate Martha Karua's visit to the area on Sunday.
The explosion jolted nearby buildings and sparked tension in the town. Body parts of the unidentified man of Somali origin were scattered on the blast's impact.
The provincial police boss, Charlton Mureithi, said residents should report suspicious individuals to security agents.
"It is a worrying incident to see people still out there trying to cause chaos. This calls for residents to be watchful of suspicious people in their midst and report them to police. This individual's intention was to kill many people," said Mureithi.
Mureithi said a pistol belonging to an officer killed late last year was recovered from the scene of crime. He said the gang may have attacked the officers and made away with the gun and warned that planners of heinous acts will soon be rounded up.
He said police are setting up place measures to tame rising cases of insecurity and urged residents to make community policing a priority by closely working with leaders to ensure law and security are maintained especially as the March 4 general election draws nearer.
A neighbour near the incident scene, Abdimalik Hussein, said he had just emerged from the house when a huge blast threw him to the ground.
"I was going to the shop to buy milk when I heard a loud bang. I sustained bruises on my arm and legs, then minutes later I heard heavy gunshots and I ran to the house immediately," said Hussein.
Improvised explosive devices are common in North Eastern Province where two people were also killed late last year by the device in Dadaab.
The incident comes barely three weeks after a renowned businessman was killed at point-blank range and his colleague severely wounded by assailants who sprayed his car with bullets.
The PPO said they had launched investigations into the incident and warned criminals who had become a security threat that their days are numbered.