South American crew used signal jammers, disguises on heists, feds sa…

They arrived in construction vests and surgical masks, armed with signal jammers, sledgehammers and blowtorches. The bank heist crew, made up of mainly Chilean nationals, hit multiple banks across California, according to federal prosecutors, and made off with $2.5 million.

In Fresno, the crew hit a Wells Fargo in May and used tools to get inside an ATM vault through an adjacent unit and made…