A 'Forensic Investigation' (following the complaint by the Jewish customer who had found the 'Horseshoe in his 'Chicken Burger) has traced ONE suspected source of contamination to a delicatessen shop in Hackney, East London.
Police have now established that the 'Horseshoe' was probably planted purposely in the 'Chicken Burger' in order to besmirch the reputation of a 'Tesco Store' close by.
A spokesperson for the actual 'Deli' (situated in a very prominent position in 'Mare Street') suggested that one of it's customers (a chap from Northern Ireland, "God Help Him") had heard that the 'Deli' was suffering financially on account of the close proximity of 'Tescos' and may have took it upon himself to contaminate some of the burgers in the store, he was known locally as a rather vindictive chap (particularly after a few drinks) and is the 'Prime Suspect'.
The proprietor of the 'Deli' (an Asian chap), insisted that HIS stock of burgers which were in his cold store were free of all contaminants, he invited the investigators to view his stock and led them to one stack which was '15 hands high' and said that such a stack represented his weekly sale of them.
'Chief Inspector Patrick Muldoon' (in charge of the investigation) commented that he was not at all surprised to learn of the involvement of the 'Gob shite from the North', he is quoted :-
"Ah sure, you'd never be able to fathom the minds of the sort of 'Whore's Ghosts' that wriggle out from under the shadow of their 'Butcher's Apron', they delight in insulting the likes of honest folks (especially Women') and the whole half of them are so ignorant, they wouldn't be able to spell 'B.I.L. BULL', the curse of 'Jayzus' on the lot of 'em".
The 'investigators' concluded that the 'Horseshoe' MUST have been planted as an act of malignancy since it had not passed through a mincing process, confirmation that it was probably the handiwork of the aforementioned 'Gob shite' since no one else would be stupid enough to think they would get away with it.