Kuresoi North MP Alfred Mutai was on Monday detained at Nakuru police station after he surrendered to authorities over chaos that were witnessed in the area last Friday.
According to the police, they intended to present Mutai to court as investigations into the incident continue.
Reports indicate that at least five people were injured and vehicles damaged during the event attended by Nakuru Governor Susan Kihika.
Mutai had been a wanted man since Friday.
However, he later on drove to Nakuru DCI offices with his lawyers ready for the grilling session.
Kuresoi North MP surrenders himself to the police
Further reports indicate that he has denied any wrong doing.
After spending hours at the station, the detectives decided to detain him pending further possible arraignment.
Police had initally apprehended 56 people over the chaos but released 44 of them after Interrogation as investigations are ongoing.
The police also reported that a bus, which had transported tents and chairs to the venue, was set on fire by unknown individuals during the disturbance.
The NPS said they had been pursuing Mutai, whom it described as the prime suspect, and urged the legislator to surrender at the nearest police station to assist investigators in establishing the circumstances surrounding the shooting.
Two spent cartridges were recovered at the scene and were sent for ballistic tests.
