NAIROBI, Kenya (AP) -- Gunmen killed one of the leaders of a feared Kenyan gang Monday, throwing scheduled peace talks between the group and the government into disarray, the dead man's deputy and an official said.

Stephen Njenga said Charles Ndungu, a leader of the Mungiki gang, was on his way to visit another gang leader in prison when he and his driver were shot to death on the outskirts of the capital.
Njenga blamed an undercover police unit for the killings. Police said the identities of the killers had not been determined.
Police have clashed repeatedly the past two weeks with members of the quasi-religious Mungiki, adding to uneasiness as the new power-sharing government tries to get Kenya going again after months of bloodshed and political paralysis over the disputed presidential election. Rights groups also linked police to hundreds of slayings of suspected Mungiki members last year.
Negotiations between authorities and the gang, which has been blamed for a string of beheadings, were scheduled to begin Tuesday, but Njenga said the murder meant he would not attend. ""I'm not going. I fear for my life,"" he said.
The talks were set for the maximum security prison in the western town of Naivasha, where the gang's imprisoned leader, Maina Njenga, is held. Stephen Njenga and Maina Njenga are not related.
A Roman Catholic bishop, a member of the intelligence services and a representative of the prime minister were also expected to participate in the talks.
Ndungu, 35, was on his way to the prison to consult with Maina Njenga on the negotiations when he was killed.
Stephen Njenga accused police of the killing. ""The last phone call we got, we heard Ndungu saying the police were shooting at his car. We heard two gunshots over the phone.""
Senior Police Superintendent Jay Munyambu said police received information that two cars were chasing each other when someone in one of the vehicles opened fire.
""Nobody was talking to us at the scene ... It is not easy to tell who the shooters were,"" Munyambu said.
But witness Bernard Ndabu said the attackers identified themselves as police officers.
""There were two cars parked and their occupants alighted with machine guns and pistols. They went to the car and sprayed it with bullets. They said they were police pursuing thugs and ordered me and others to vacate the scene,"" Ndabu said.
Maina Njenga was jailed last year on drugs and weapons charges. The gang has been accused by police of dozens of beheadings in the past five years and extortion.
In what appeared to be an illegal extrajudicial crackdown on gang activity last year, more than 450 young men were slain during a three-month period, a state-funded human rights commission said in November. The Kenya National Commission on Human Rights said circumstantial evidence pointed to involvement by security forces.
Twenty-four leaders of the Mungiki have disappeared since January, Stephen Njenga said.
The Mungiki, who were outlawed in 2002, say they are a sect dedicated to preserving the culture of the Kikuyu, Kenya's largest tribe.