Three teachers were killed in a suspected Al-Shabaab attack in Kamuthe area, Garissa County, in a pre-dawn strike on Monday.
Garissa County Regional Education Officer Yusuf Karayu confirmed three teachers died and one was injured at Kamuthe Boarding Primary School.
The injured teacher was rushed to Garissa Referral Hospital.
The militants attacked Kamuthe school where teachers sleep and a nearby AP Camp around 1 am on Monday.
Mr Karayu says the school has been closed and all teachers operating along the borderline will be transferred immediately.
North Eastern Regional Police Commander Paul Soi also confirmed the attack to the Nation.
According to Mr Soi, the militants were targeting a communications mast and a police camp in the area. The mast was partiality destroyed.
This latest attack comes barely a week after the Somalia-based militants killed four pupils from Saretho Primary School in Garissa and left three others with injuries.
An attack on teachers in the region two years ago saw two tutors lose their lives, leading to a mass exodus of teachers from the North Eastern region.
Garissa Governor Ali Bunow Korane condemned the attack as cowardly as he condoled with the victims.
"I strongly condemn the cowardly terrorist attack in Kamuthe, Fafi Sub-County," he said.
"I express my deepest condolences to the families of the victims and wish a speedy recovery to the injured," he added.
Garissa Women Representative Anab Subow Gure condemned the attack while calling on the government to take security matters more seriously.
She said that all attacks in the county were preceded by intelligence reports and blamed security agencies for failing to act.
"It’s time the government takes matters security with the seriousness they deserve. The attacks in Diiso, Saretho and Kamuthey were all preceded by credible information and intelligence from the public and the county security teams did not act as required," Ms Gure said in a statement.
She called on Interior Cabinet Secretary Fred Matiang'i to stop engaging in politics and focus on the country's security.
Over the last six weeks, Shabaab insurgents have intensified their attacks in Kenya which have left at least 20 dead.
At least 10 attacks have been executed by the militants in the period including bus raids, kidnappings and Improvised Explosive Device (IED) attacks.
Counties in the Northern and the Coastal region have borne the brunt of terror activity, most of which has targeted security personnel.
Wajir, Garissa, Mandera and Lamu have been worst hit by the attacks.
Just days ago, two security officers lost their lives when their vehicle hit an IED in Khorof Kharar area.
A week earlier, two Special Forces officers died when the militants staged a similar attack in the same area.