1993: Convicted three times in Washington state on felony drug charges. Sentenced to about 14 months in jail.
June 1994: A U.S. immigration judge deports Sanchez to Mexico.
July 1994: Sentenced to 90 days in jail after Arizona court revokes his probation.
December 1995: Arrested on a $20 marijuana buy in San Francisco. A judge issued a $5,000 bench warrant for his arrest when Sanchez didn't show up in court.
July 1996: Convicted in Washington of felony possession of heroin. Sentenced to 12 months and one day in prison.
April 1997: Deported to Mexico.
January 1998: Arrested by U.S. Border Patrol and deported to Mexico in February.
February 1998: Arrested by Border Patrol and sentenced to more than five years in federal prison.
March 2003: Deported to Mexico.
July 2003: Arrested by Border Patrol and sentenced to more than four years in prison.
June 2009: Deported to Mexico after completing sentence.
September 2009: Arrested in Texas, where he claimed to be a U.S. citizen born in Arizona. Sentenced to nearly four years in prison.
March 26, 2015: Released to San Francisco Sheriff's Department on a 1995 drug charge.
March 27: Immigration and Customs Enforcement issues a "detainer" on Sanchez, requesting the sheriff's office hold him for an extra 48 hours if they decide to release him. San Francisco district attorney's office decides to drop the case because it is old and minor.
April 15: Sanchez is released by sheriff. There are no active arrest warrants or court orders requiring the sheriff's office to keep him, they say. ICE is not notified.
July 1: Steinle dies from gunshot wounds while walking along Pier 14 in San Francisco with her father. Sanchez is arrested.