Shabaab Raid Kenyan Police Post
About 100 "terrorists" attacked the station in Diff, a district of Wajir county in northeastern Kenya in a pre-dawn raid, police said in a statement.
"The officers put up a stiff resistance till about 05:00 when they were outflanked and the terrorists managed to sneak into the camp," the statement said, adding that three officers were injured.
The police added the Shabaab had fled in a police Landcruiser which they used to extricate "the many casualties they suffered."
Police added police and army units had set off in pursuit of the vehicle which it was believed had escaped across the border into neighbouring Somalia.
Radical islamist Shabaab fighters have in recent months carried out several similar raids on police posts in rural areas controlled by the group near the Somali border.
The group has carried out several bloody attacks in Kenya since troops from the African Union Mission to Somalia (Anisom) crossed into Somalia in 2011 to confront the jihadists.
Kenya suffered a severe military setback last January when a heavily-armed Shabaab force attacked an African Union base manned by some 200 Kenyan peacekeeping troops at El-Adde in southwestern Somalia.
Some 100 Kenyans were killed in the assault, according to the Shabaab. Nairobi has not given a casualty figure but regional security sources say the Shabaab tally is credible.
On Sunday, the Al Qaeda-aligned Shabaab posted a high quality video online purporting to show detailed footage of the El-Adde raid.