The victim, a 42-year-old man, was stabbed twice in the arm and taken to Highland Hospital.
The 23-year-old Berkeley man was walking home when four men demanded his property, then stabbed him when he fought to keep it.
Yarman Smith has convictions for pimping a minor and possession of child pornography that sent him to prison in 2013, according to court papers.
The Border Patrol arrested Kevin Alvarado in late July and sent him back to Alameda County to face murder charges.
Police said the woman who was stabbed in a tent in People’s Park on Saturday had serious injuries but is expected to survive.
“My son got lucky,” the father of the student told Berkeleyside on Wednesday. “This could happen to anyone.”
Both victims were rushed to the hospital but were in stable condition Monday, police said. Authorities have made arrests in both cases.
Authorities said the stabbing was the culmination of a domestic violence attack and sexual assault that began in Berkeley.
Police arrested a parolee after a car crash in University Village and found a gun Tuesday night. Detectives are also investigating a stabbing.
A 42-year-old Berkeley man is in custody Thursday after allegedly stabbing a man at Civic Center Park on Wednesday evening, sending him to the hospital, authorities report.
A neighbor who heard the attack tackled the assailant and wrestled with him to intervene, police said.
The stabbing has been classified as life-threatening. A 52-year-old man, who police say also bit a bystander who tried to stop the attack, was arrested on suspicion of attempted murder.