Police initially believed Statement the case to be a murder-suicide , but two days later arrested Arrest 35-year-old San Francisco resident Binh Thai Luc , a friend of one of the victims , and charged Arrest him with five counts of murder , five counts of robbery , and two counts of burglary .

After years of delays Change_event_time in preliminary hearings as prosecutors requested Request additional time to review evidence , Luc 's trial Judgment_communication finally began Process_start on October 10 , 2017 .

Following a seven-week trial Judgment_communication and a week of deliberation Legal_rulings , on December 11 the jury found Coming_to_believe Luc guilty of all the murder and burglary charges .

Luc was subsequently sentenced Legal_rulings to five consecutive life terms and began Process_start serving Arrest his sentence at San Quentin State Prison in March 2018 .

Luc 's arrest Arrest and conviction led to Causation political controversy Quarreling over deportation from the United States , in particular the Supreme Court ruling Legality in `` Zadvydas v. Davis '' that existing Presence statutes did not authorize long-term post-prison detention of criminals Committing_crime whose deportations could not be carried out Military_operation .

Luc , a native of Vietnam who immigrated Becoming_a_member to the U.S. legally in 1989 as a child , was ordered Request deported Removing after a 1998 conviction for armed robbery , but was released Releasing in the U.S. after completing Process_end his sentence because Vietnam 's repatriation agreement with the U.S. explicitly excludes Preventing_or_letting people who arrived in the U.S. before 1995 .