The Instagram post, a day after the April 3 shootings, was traced to a Pennsylvania minor, officials said.
The man was allegedly spotted masturbating in a public area of town.
The 36-year-old man was in serious condition following the Tuesday incident. Hospital officials on Thursday had some good news, though.
Here's what we know about Nasim Aghdam, identified as the shooter at YouTube headquarters.
Police say a woman believed to be the shooter was found dead after apparently killing herself. She's since been identified in a new report.
Prosecutors said the woman stole approximately $350,000 by electronically transferring money out of her grandma's account each month.
Christian Navarette, 31, of San Bruno, was arrested and booked into the county jail on suspicion of crimes.
The woman, a former San Bruno firefighter, was sentenced this week for embezzling money from the department's annual toy drive fund.
Officials say two people were in the stolen vehicle when they spotted it.
Police say the driver is cooperating with their investigation.
Prosecutors said officers found Julio Edgardo Ortiz orally copulating a teenage boy in 2016.
Police say the duo were in possession of "several" documents in others' names.
The crash happened during the Thursday morning commute.
Officers investigated the two separate incidents around 2:35 p.m. Wednesday.
Paul Souter and Shelby Lujan are accused of burning their two-year-old dog to death.
According to police, a suspect had forcibly taken merchandise from an employee.
The fire was reported at Garden Avenue.
"He would just go into a bank and ask for money. ... One time he even said please," said attorney hoping to spare suspect from 3-strike law.
The 23-year-old defendant reportedly confronted partiers, allegedly shooting one in the stomach, at a Daly City gathering, officials said
The incident was reported on Dec. 29 on the 800 block of Huntington Avenue.
The incident was reported in the 2500 block of Heather Lane.
The vehicle involved was described as a small, white sedan with a multi-colored company logo on the driver-side front door, police said.
Police say that the man's accomplice got away. (breaking)
Police said the man was making threats at a group of people while holding the gun.
Police are looking for a pair of tobacco-loving burglars.
The armed robbery was reported Thursday night.
Man Crates, Facebook and Oracle are among those hiring as of Dec. 27, 2017. (breaking)
San Bruno police are asking for the public's help finding whomever hit a pedestrian — and left them for dead.
The incident was reported just after 7 a.m.
Breaking: Police are looking for whomever burglarized a local restaurant this week.
BREAKING: CHP officials tell Patch that 2 or 3 people got away after running from the crash site outside an area country club.
Breaking: Police say that officers fanned out across town to conduct a special traffic safety operation.
Police say the suspect was last seen fleeing on El Camino Real. (Breaking)
Three consecutive "Spare The Air" alerts are in effect for Friday, Saturday and Sunday in the Bay Area.
The person was hospitalized for apparent stab wounds.
BREAKING: This is the second such arrest announced this week on the Peninsula.
Police in San Bruno on Wednesday arrested two people in connection with the theft of a vehicle out of San Francisco and other offenses.
Police say the man was caught in the act of burglarizing a vehicle that was parked at a local Caltrain lot. (breaking)
Two incidents where a woman was allegedly assault were reported to authorities.