Sixth MS-13 gang member sentenced to life in prison

The last of six MS-13 gang members convicted in August of federal racketeering and murder charges was sentenced Thursday to life in prison.

Guillermo “Sparky” Herrera, 21, was convicted along with another gang member of the July 11, 2008 murder of Armando Estrada, 31. Estrada was a fake document dealer who refused to pay an MS-13 “tax” on the gang’s Mission District turf, prosecutors said.

Herrera confronted Estrada at 20th and Mission streets, chased him, and shot him in the back of the head at close range with a shotgun, prosecutors said.

Five of Herrera’s associates were sentenced to life in prison last week.

aburack@sfexaminer.com

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