“Residents in the disturbed areas are requested to cooperate with the security agencies and to share information on suspicious persons and activities,” said Matiangi.
Officials said the incidents are domestic terrorism which are being fanned by some.
At least 15 suspects were arrested over the attacks.
It came as more security officers were deployed in the area to trace more suspects over the latest attacks.
A team of detectives has been sent there to back up with locals to help in the operation.
It came two days after a boda boda rider was on New Year day killed after his motorcycle ran over a bomb that was set on the road in Kiunga, Lamu County.
Officials who attended the scene said the Improvised Explosive Device had been set by al-Shabaab militants sighted in the area.
The rider was ferrying khat to the near Kenya-Somalia border when his motorcycle was hit.
He died on the spot, police said.
Bomb experts said the explosive used in the attack was made using a different technology.
The attack prompted an operation spanning from Mandera, Wajir, Lamu and parts of Kilifi Counties with several multi-agency teams being deployed.
The area is near the Kenya-Somalia border which has been under attack by terrorists in the past.