Sponsors of an initiative requiring food products made from genetically engineered crops to be labeled have submitted 350,000 signatures.
The signatures were delivered inside an ambulance with a sign reading "Label GMO Food" on the side.
Initiative 522 would require food and seeds produced entirely or partly through genetic engineering and sold in Washington to be labeled as such, beginning July 1, 2015. Under the measure, raw foods that are not packaged separately would have to be labeled on the retail shelf.
The proposal comes two months after California voters rejected a similar ballot measure.