The murder trial facing former Nakuru Town MP David Manyara and 13 suspected Mungiki members opened yesterday.
The 14 are accused of hacking 10 residents to death in a night raid on several estates on January 5.
Nakuru resident judge Muga Apondi is presiding over the trial. State counsel Evans Onderi indicated the prosecution would call 52 witnesses.
Nyeri police chief Severino Kubai, who until April was Nakuru deputy police boss, recalled how he received information that a prominent personality had harboured the outlawed sect's followers at Kokoto, who later fled on January 4 and 5 after the mayhem.
However, Mr Kubai, the prosecution's third witness, said his informant did not disclose the name of the prominent personality.
He said when security personnel invaded the alleged homestead at Kokoto on January 6, one of the youths emerged wielding a panga and attacked Nakuru District police boss Joel Langat.
The others charged with Mr Manyara are Mr John Njenga, Mr Jeremiah Muturi, Mr Duncan Chege, Mr John Irungu, Mr Samuel Mwangi, Mr Peter Kiragu, Mr Peter Mwangi, Mr Francis Maina and Mr Paul Githii.
Others are Mr M'to Muchiri, Mr Kariuki Mugo, Mr David Karanja and Mr Jeremiah Wanjau. The State terminated charges against Mr Nderitu Chuma who died in prison.
Mr Manyara is represented by Mr Karanja Mbugua while lawyers Julius Sunkuli, Juma Kiplenge, Evans Monari, Muturi Njee and Gordon Ogolla are appearing for the other suspects.
Earlier, a man who described himself as a police informer said that he had on January 3 followed a group of men to Nakuru Town after he overheard them say they would attack the residents.
Corporal John Mbaruku of the Kenya Wildlife Service (KWS) told Mr Justice Apondi that he and a colleague arrested two men who had trespassed into the Lake Nakuru National Park on January 3.
Before the trial started, Mr Justice Apondi picked three assessors from five applicants. They are Mr Bernard Ouma, a retired medical worker, former Egerton University employee John Maina and retired civil servant Benjamin Oteng'oa.
The hearing continues.