BRUSSELS (AP) — European Union nations have postponed a decision on the continued use of the popular weed killer glyphosate amid concerns about its possible links to cancer.

EU member nations met to discuss the issue on Wednesday after the European Parliament voted early this week to limit an extension of the weed killer's license to five years. The EU's executive Commission had earlier proposed a license extension of ten years.

The postponement likely means a decision won't be reached until a Nov. 6 meeting, officials said.

Many argue there are too many uncertainties about the health effects of the weed killer. Glyphosate is an ingredient in Roundup, a popular weed killer across the globe.

Environmentalists want a ban while the EU's farmer's union wants a 15-year extension.