According to Nakuru Police Commander Peter Mwanzo, the MP was arrested following an altercation at a polling station within the county.
“This morning he appeared at the Lanet polling centre where he fought a fellow candidate. Later on in the afternoon, at Naka polling centre, he sent a group suspected to be goons but were chased away by police,” said Mwanzo.
He noted that one person is still hospitalised for injuries sustained in the fracas and that police had opened investigations into the incident.
Mr. Gikaria is being probed for possible charges of causing violence at a polling centre and also assault.
Meanwhile, he is being detained at the Central Police Station.
Gikaria, the incumbent MP, is defending his seat on a United Democratic Alliance (UDA) ticket in a race that has attracted four contenders.
Former Nakuru Town MP David Manyara, former Nakuru Mayor Benson Mwangi, county assembly speaker Joel Kairu, and Kanu women league coordinator Grace Karuga are among those seeking an electoral mandate to unseat the MP.