An unknown number of people raided a patrol base and escaped with three rifles in Mbita, Homa Bay county.
The officers who were supposed to be on duty were not present when the incident happened on Wednesday night.
Police said the thieves may have had information the officers were away from the work station when they staged the raid.
They went through a window at the office formally run by a chief and broke into a steel box that had the weapons escaping with them.
County commander Samson Kine said they initially escaped with three AK47 rifles, three G3 rifle sand 130 bullets were stolen.
The said thieves however dropped two of the rifles on the way as they escaped.
The weapons were recovered on Thursday by a search team.
“We are still pursuing the issue to know how and why it happened that way as part of efforts to get the thieves,” he said.
The Kipasi patrol base is usually manned by six officers.
Police authorities said on Thursday they are investigating the circumstances under which the incident happened.
The search of the weapons is ongoing amid fears they will be used in committing crime.
Last October, the deputy Inspector General in charge of the Kenya Police Service Edward Mbugua directed that all police posts with less than six officers be closed and the officers deployed to the mother stations.
Mbugua said such officers were unable to provide services to the members of the public as expected.
The directive came just a day after unknown people raided Kirimon police post in Samburu Central and stole two G3 rifles together with two magazines loaded with 40 rounds of ammunition.
The attackers had broken the door of the armoury and shot one round in the air as they were leaving.
The post had only four officers at the time of the incident. There are fears the weapons will be used in a deadly attack in the near future.
The area faces increasing cases of attacks by gunmen who raid animals.
