He said all the victims were white males and there was every reason to believe Muhammad had acted alone.
VIDEO: Fresno police update on shooting "We have video evidence, which we will be analyzing, to get a detailed description of who this individual is", Dyer said.
Police in California say, despite what the suspect said during his arrest, a deadly rampage that resulted in the death of three white men Tuesday morning was motivated by race, not terrorism.
Shooter Kori Ali Mohammed was already wanted after last week he shot a police officer outside a motel in the city.
Muhammad hid out in a ravine and practiced voodoo rituals after the motel slaying. At some point he is said to have uttered the Arabic phrase "Allahu Ackbar" (God is great).
The Fresno killing spree that left several families fatherless started when the gunman thought a man disrespected him. "I keep telling Kori, stop saying white people".
Muhammad "is not a terrorist but he is a racist", Dyer said. The driver, who wasn't hit, immediately sped toward the police department in an effort to save Randalls, but he died soon after at a hospital.More news: Turkey PM: Opposition Must Respect Referendum Results
Randalls had just joined PG&E as a customer service representative six weeks ago, said the IBEW 1245 local chapter to which Randalls belonged. "There were no boundaries with race, religions, beliefs, with anything. Good morning Mom, I love you", Rosie Wagner said. "He was a stand-up guy". He then shot and killed the man he encountered next.
Mr Hughes came home to see a body draped in a blanket on the pavement leading to his front door.
Muhammad's brother, who didn't want to be identified by name, says his family had been concerned about Muhammad's homelessness. Gassett was shot while walking north on Fulton Street, and Jackson was shot in the Catholic Charities parking lot on North Fulton Street, sheriff's spokesman Tony Botti said. Muhammad was living on the streets and most people had "disassociated" themselves from him, the chief said.
Police said the firearm used in the crime was allegedly stolen by a hispanic man who spoke with Muhammad after the shooting spree and is urged to turn himself in.
Muhammad, 39, was arrested shortly after the rampage. He is expected to be charged with four counts of murder - one each for Tuesday's three victims and the security guard, 25-year-old Carl Williams. He allegedly fired a total of 16 rounds in four locations, as the LA Times reports, and as officers arrested him he said, "I did it". The fanatic black nationalist told investigators he wanted to slaughter as many whites as he could.
Muhammad's social media posts frequently expressed a dislike of white people as well as the government.
"On what is believed to be his Facebook page, Muhammad repeatedly posted "#LetBlackPeopleGo" and encouraged "black warriors" to "mount up".