The Kenya Defence Forces (KDF) said four Al Shabaab fighters have been killed following a dawn attack on the Manda-Magogoni naval base in Lamu County on Sunday.
The Kenyan military officials also confirmed that there were no casualties on either the Kenyan or US side following the dawn attack in Lamu.
Al Shabaab said it had launched an early morning attack on Manda Air Strip which also hosts US naval base.
The group said in a press statement that the attack which started with a suicide car bomb was still ongoing and their fighters have taken the control part of the base.
However, according to Kenya military Spokesman Colonel Paul Njuguna, the attack was successfully repulsed.
This latest attack comes as Al- Shabaab militants on Thursday last week attacked a bus at Nyongoro area, Lamu County, with three people losing their lives in the incident.
The terror group has escalated its attacks on Kenya in recent months in retaliation of KDF presence inside Somalia.