The issue has barely been an issue in the Polish media, and Naze, the official in charge of the investigation, has repeatedly cast doubt on the accusations.

NPR: Poland: Still No Sign Country Source Of Horsemeat

Helicopters and lifeboats from Harwich and Walton-on-the-Naze were involved in the search for the missing people.

BBC: Felixstowe European Gateway ferry disaster memorial plan

"What we have today is that there are no signs that the horsemeat was in Polish beef, " Naze said.

NPR: Poland: Still No Sign Country Source Of Horsemeat