Three Mexican suspects were arrested with two South Africans when elite police units raided a multimillion-dollar crystal meth lab hidden in a remote farm north of Johannesburg, police said Tuesday.

Crystal meth and the makeshift labs some people set up inside their own homes posed serious safety risks for law enforcement back in the early 2000s. Today, those dangers still exist.

A secret crystal meth lab was uncovered by police in Somerville on Oct. 23. Somerville police said they made the discovery while responding to a medical call on Oxford Street that morning when two ...