A federal jury in San Francisco has found that Monsanto’s Roundup was a “substantial factor” in causing a Northern California man’s cancer.

The unanimous ruling Tuesday from the six-member jury means that jurors will now move on to hear a second phase of Edwin Hardeman’s case against Monsanto, the first bellwether case to go to trial in multidistrict litigation claiming Roundup causes non-Hodgkin lymphoma in humans. In the trial’s second phase, jurors will consider evidence about what the company knew about the herbicide’s carcinogenic properties, its interactions with regulators and potential damages.