Al-Shabaab militants attacked and destroyed a communication mast in Korakora area, in Garissa County. Locals said about 20 gunmen staged the attack on the mast before they were repulsed by police manning the site. No injury was reported in the Thursday morning incident.
Police are posted in almost all the more than 200 masts to protect them from such attacks.
The incident came even after security agencies were warned of possible attack on vital installations on the main Kenya-Somalia border.
North eastern regional police boss Rono Bunei said they had enhanced operations in the area to address the menace.
In recent years, counties in the Northern region have borne the brunt of frequent attacks from the Shabaab militants. But this year, the number of attacks have decreased. Wajir, Garissa and Mandera counties share a border with Somalia.