He was also charged with being in possession of literature that appeared to glorify terrorism.
He pleaded guilty to impersonating a Directorate of Criminal Investigations officer.
A man accused of lying to police officers that he was among al-Shabaab terrorists who attacked the Westgate shopping mall in Nairobi in 2013, during which at least 67 people were killed, was on Tuesday charged in an Eldoret court with making a false statement and creating alarm.
He was also charged with being in possession of literature that appeared to glorify terrorism.
