Guerrero has seen an upsurge in violence linked to drug cartels in recent months, including kidnappings of workers from Torex Gold's US$800mn Limon-Guajes gold project and Goldcorp's Los Filos mine. Three of four abducted Goldcorp workers were found dead.
"Continued security issues in the state of Guerrero prevent the resumption of operations at Campo Morado," Galassini told Nyrstar's Q1 earnings call.
"We're working with the government, the community and regulatory agencies to seek a resolution to the problems. Like many others we're finding this to be a very complex issue and that it's not likely to be resolved in the near term."
The mine will restart when site and community issues are resolved and when operations can be conducted in a secure environment, he added.