A 31-year-old member of the MS-13 gang from El Salvador has been sentenced to life in prison without parole for his roles in two murders, an attempted murder and an apartment shooting in Colorado, judicial officials announced — part of broader efforts to crack down on transnational criminal groups trying to gain a foothold in metro Denver. After a four-week trial, Mauricio Alvarado-Vasquez was convicted and sentenced in state court in July to life in prison without parole, 18th Judicial District officials confirmed Friday morning. Citing “security concerns” and worries about a potential for witness intimidation, law enforcement officials did not publicize this and more than a dozen other cases against MS-13 members who committed multiple crimes around metro Denver in 2019 and 2020 until this week, judicial district spokesman Eric Ross said. Alvarado-Vasquez was convicted of the Sept.