The Police have seized a self-propelled grenade in Thika Road Nairobi in the early morning raid.
The police have so far arrested five people in connection with the grenade while four others are believed to be on the run.
The mission was made up of nine man riding on three motorcycles. The Police are still trying to fill the dots to establish the intention of the assailants.
The crack down for the four has been intensified along Thika Road to nab them. The continued alertness by the police comes after the US embassy issued a warning to the people telling them to be extra vigilante.
More information to be given as soon as the police offer their full report.