A preliminary count of attempted murder was dropped because of insufficient evidence of intent, according to the DA's office.
Lomeli is also the defendant in a misdemeanor drug possession charge involving heroin. He was found with two syringes containing the drug after he was stopped by officers in Redwood City on Jan. 29.
A hearing in that case has been set for July 16, according to Deputy District Attorney Al Serrato.
"The heroin charge is trailing so it will be resolved either in conjunction with or following the felony since the penalty is so much lighter," Serrato said.
In the assault case, Lomeli was with the victim, a 60-year-old Redwood City man, at the victim's home, and left in the early morning on April 30, according to District Attorney Steve Wagstaffe.
After Lomeli left, the victim realized his cellphone was missing and thought Lomeli had stolen it. He got in his car and went looking for Lomeli and found him in the 3700 block of Haven Avenue in Menlo Park at about 1:13 p.m, according to Wagstaffe.
The victim confronted Lomeli, who allegedly pulled out a box cutter and slashed and stabbed him five times in the back of the head and neck, Wagstaffe said.
When passersby intervened, Lomeli fled the scene and allegedly threw the box cutter in a slough, where it was recovered by police, Wagstaffe said.
Officers found Lomeli near Marsh Road and Highway 101 in Menlo Park. He was allegedly carrying a small amount of methamphetamine when he was arrested, according to Wagstaffe.
The victim was treated at Stanford Hospital for non-life-threatening injuries, Menlo Park Police Department spokesperson Nicole Acker said.
Lomeli remains in custody on $35,000 bail.
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