Suspected Al-shabaab militants have destroyed a Safaricom communication mast in Khorof Kharar, Wajir in a predawn attack.
Wajir police boss Thomas Ngeywa said the militants also launched a failed attack on a police camp.
The Saturday attack happened days after intelligence officers said several Al-Shabaab members entered Kenya from Somalia to carry out attacks during the Ramadan period.
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.