The Dallas County Department of Health and Human Services received notification Monday that a fourth case of listeria is linked to the national investigation of illness caused by contaminated cantaloupes sold by Jensen Farms.

An 89-year-old Dallas County resident was hospitalized with listeriosis and has since died. For medical confidentiality reasons, the resident’s name will not be released.

There are no other pending cases of listeria in Dallas County.

Residents have been advised not to consume cantaloupes sold under the Rocky Ford brand name from Jensen Farms in Colorado. The listeria bacteria can still grow in a refrigerated environment, so anyone who may have purchased contaminated cantaloupe is also encouraged to sanitize any area where the produce may have been stored.