(UPDATED COVERAGE, June 8) The Food and Drug Administration is taking a second look at an Arizona farm connected to one of four food-safety-related recalls in May.

UPDATED: FDA inspectors return to Freshway Foods

Inspectors were at a Yuma, Ariz., growing operation connected to Sidney, Ohio-based  Freshway Foods in early June, said Sebastian Cianci, an FDA spokesman.  

“They’re doing an additional environmental assessment in Yuma to better understand the factors related to the contamination,” Cianci said. “They still don’t know the exact cause.”

Nor does the FDA know the causes yet of contaminations of product shipped by Salinas, Calif.-based Fresh Express and Maywood, Calif.-based Caldwell Fresh Foods, Cianci said. 

Investigations of all three outbreaks are ongoing, he said. He did not have an update on the most recent recall, involving Salinas-based Organicgirl Produce LLC.

Cianci echoed produce industry officials who said there is no indication the four outbreaks are related.

(Note on correction: In the original story, Caldwell Fresh Foods was mistakenly identified as the company connected to the farm FDA made a second visit to.)