A month after a beloved North Beach sketch artist suffered a fatal random attack at a Market Street bus stop, the San Francisco Police Department says that they have made an arrest in his death.

As you might recall, 74-year-old Stuart "Stu" Jackson, who San Franciscans knew as a fixture at places like Caffe Trieste, Stella Pastry and Vesuvio, died on December 12 after he was attacked at Market and Van Ness in a beating SFPD described as "unprovoked."

According to Jackson's brother, on December 5 "this perpetrator got up off of a bus stop bench and walked over and hit him in the side of the head." The blow was "so hard that it crushed his skull," his brother said, then as Jackson fell he again hit his head on the pavement. Jackson, who had been headed to a street fair, was instead was rushed to San Francisco General Hospital, but never regained consciousness.

Jackson was known for drawing portraits of his fellow cafe patrons, much to their subjects' delight. “He was kind of a unique, local character and a lot of people were familiar with him,” a friend told the Chron at the time of his death.

A month after Jackson was assaulted, SFPD released video they said was of the suspect, asking the public's help in identifying the man. The Chron reports that just days after the video was released, they were finally "able to identify the man," and on January 7 arrested 38-year-old Collin R. White at his home in San Francisco.

"Officers have yet to determine a motive for the violent attack," the Chron reports, "as White did not rob Jackson and it appears they did not know each other."

According to San Francisco District Attorney's Office spokesperson Alex Bastian, White has been charged with involuntary manslaughter, assault with force likely to cause great bodily injury (with an elder abuse enhancement), battery with serious bodily injury, and elder abuse (with an enhancement for causing death). White was arraigned on Thursday, and pled not guilty.

As of Monday morning, White remains in San Francisco County Jail and had not posted his bail of $400,000.

Previously: Fatal Beating Of North Beach Artist Takes SF To 49 Homicides For 2015
Have You Seen This Market Street Homicide Suspect?