was the news published in any newspaper?
Yes. Sunday Sport and Sunday Telegraph
Shergar
 according to the tabloid newspaper "Sunday Sport", Shergar was spotted being ridden by the missing Lord Lucan;
who is shergar? Irish-bred, British-trained Thoroughbred racehorse were there any attempts to steal it? Yes. In 1983 how was the horse rescued? The horse was killed by the gang
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Shergar [SEP] Speculation and hoaxes
With no definite news of Shergar's whereabouts, and with the Gardaí limiting the information they released to the press, the media took to speculation to cover the story. Baerlein observes that in reporting the Shergar case, "the press speculation was remarkable for its enthusiasm and its inaccuracy over a long period of time". Such media claims included that Shergar had been stolen by Colonel Gaddafi as part of a deal to supply arms to the IRA; that, according to the tabloid newspaper "Sunday Sport", Shergar was spotted being ridden by the missing Lord Lucan; that a Middle Eastern horse breeder had stolen him for stud; and that the Mafia had undertaken the act to punish the Aga Khan over a previous sale of a horse which had gone badly.