Five suspected al Shabaab militants were Saturday killed in an operation in Fafi, Garissa County.
Police said four others were arrested during the operation.
The intelligence-led operation caught the militants by surprise as they crossed into Kenya and establish a temporary camp in Fafi area of Garissa.
The group was headed to Fafi from a hideout when they were ambushed, police said.
Police thanked the locals for their support and provision of timely information.
The team recovered two PKM machine guns, one RPM, six AK47 rifles and a number of Improvised Explosive Devices (IED) making materials.
Additionally, mobile phones and SIM cards were also recovered, officials said.
The four fighters who were arrested were taken in for further interrogation and are cooperating well with detectives, police said.
Quick exploitation of the phones has so far given important leads on a number of local al Shabaab facilitation networks, officials said.
On Wednesday, another team thwarted plans by the gang to set up a base in Manga, Lamu County and destroyed their cell.
Officials said a significant number of terrorists were killed as they were in the last stages of orchestrating a reinforced ambush targeting security forces in the area.
Police say the area is being used as a logistics base for the terrorists who move to attack targets and retreat there.
The area is near the Kenya-Somalia border where the terrorists cross and launch attacks inland.
A major operation is ongoing in the area to address al Shabaab-related attacks which partly happen because of the proximity of the area to the Kenya-Somalia border.
The area near the border with Somalia has suffered a series of terrorist attacks.
Terrorists have been attacking places near the border by using guns and explosives leaving dozens dead and many injured.
The recent attacks have forced the government to suspend plans to reopen the Kenya-Somalia border.
This comes in the wake of reports the terror gang has been sending their members to Kenya in the past month in readiness for an attack.
Police say they have enhanced their operations in the area to avert the planned attacks.
A number of ambushes have happened in the past months leaving dozens of security agents either dead or injured.
