Mr James Akello, the police officer in charge of the probe, said they are planning to charge the MP with five criminal offences, which they need time to look into.
The charges are hate speech, resisting arrest, assaulting a police officer, possession of a firearm and offensive conduct.
The prosecution, led by Mr Daniel Karuri, urged the court to deny the MPi release on cash bail saying he is a flight risk and is likely to interfere with witnesses.
Police are seeking to detain Kapseret MP Oscar Kipchumba Sudi for 14 more days to complete investigations into his unsavory remarks against President Uhuru Kenyatta and altercations at his residence in Eldoret, Uasin Gishu County.
In a miscellaneous application filed before Nakuru Chief Magistrate Joseph at Kalo on Monday, the State requested to be allowed to hold Mr Sudi as police finalise the investigation before charging him.