An Administration Police officer at Navakholo Police Station in Kakamega is on the run after shooting his wife dead on Thursday night.
The woman, identified as Christine Maonga, is said to be a teacher at Navakholo Secondary School.
Reports indicated that the two have been embroiled in domestic disputes for a long time, with the officer threatening to kill “someone”.
Western regional police boss Rashid Yakub on Friday confirmed the shooting, saying they had recovered the firearm.
"The police officer is at large but we are pursuing him," he told the Nation.
Police in Kakamega have launched a man-hunt for the suspect, identified as Patrick Nyapara.
“We managed to recover the Ceska pistol he used to commit the murder but we are yet to arrest him. We request anyone with information about his whereabouts to volunteer to the police,” Mr Yakubu said.
He assured that the officer will be arrested and arraigned to face charges of murder.
The killing sparked unrest at Navakholo Secondary School, with students and residents engaging police in night-long running battles.
“There was very high tension at Navakholo market after news broke out about the killing of the teacher but police managed to contain the situation,” added Mr Yakubu.