At least three Al-Shabaab militants were on Friday killed and four others injured after an improvised explosive device (IED) exploded on them.
The fighters were assembling the device at Fafi area in Garissa County when the 4 pm incident happened, according to police reports.
Witnesses said a vehicle with Somalia registration number and suspected to have come from the Santaro Al-Shabaab camp arrived to pick the badly wounded militants and drove them back to the base for treatment.
The incident happened at Kashin, located 50 kilometers from the Kenyan border with Somalia.
Kenyan security forces visited the scene and collected some materials for further investigations.
The incident comes about two months after heavily armed insurgents attacked Yumbis Border Police camp in Garissa County. Three Al-Shabaab operatives were killed in the night attack that also left three officers injured.
In the past few years, Al-Shabaab militants have been planting landmines on the roads in the region targeting target security agents on patrol. Dozens of police officers have been killed in the process.